Postal censorship
Encyclopedia
Postal censorship is the inspection or examination of mail
Mail
Mail, or post, is a system for transporting letters and other tangible objects: written documents, typically enclosed in envelopes, and also small packages are delivered to destinations around the world. Anything sent through the postal system is called mail or post.In principle, a postal service...

, most often by government
Government
Government refers to the legislators, administrators, and arbitrators in the administrative bureaucracy who control a state at a given time, and to the system of government by which they are organized...

s. It can include opening, reading and total or selective obliteration of letters and their contents, as well as covers
Cover (philately)
In philately, the term cover pertains to the outside of an envelope or package with an address, typically with postage stamps that have been cancelled and is a term generally used among stamp and postal history collectors. The term does not include the contents of the letter or package, although...

, postcard
Postcard
A postcard or post card is a rectangular piece of thick paper or thin cardboard intended for writing and mailing without an envelope....

s, parcels
Parcel post
Parcel post is a service of a postal administration for sending parcels through the post. It is generally one of the less expensive ways to ship packages that are too heavy to be sent by regular letter post and is usually a slower method of transportation....

 and other postal packets. Postal censorship
Censorship
thumb|[[Book burning]] following the [[1973 Chilean coup d'état|1973 coup]] that installed the [[Military government of Chile |Pinochet regime]] in Chile...

 takes place primarily but not exclusively during wartime (even though the nation concerned may not be at war, e.g. Ireland during 1939-1945) and periods of unrest, and occasionally at other times, such as periods of civil disorder
Civil disorder
Civil disorder, also known as civil unrest or civil strife, is a broad term that is typically used by law enforcement to describe one or more forms of disturbance caused by a group of people. Civil disturbance is typically a symptom of, and a form of protest against, major socio-political problems;...

 or of a state of emergency
State of emergency
A state of emergency is a governmental declaration that may suspend some normal functions of the executive, legislative and judicial powers, alert citizens to change their normal behaviours, or order government agencies to implement emergency preparedness plans. It can also be used as a rationale...

. Both covert and overt postal censorship have occurred.

Historically, postal censorship is an ancient practice; it is usually linked to espionage
Espionage
Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

 and intelligence gathering
Intelligence (information gathering)
Intelligence assessment is the development of forecasts of behaviour or recommended courses of action to the leadership of an organization, based on a wide range of available information sources both overt and covert. Assessments are developed in response to requirements declared by the leadership...

. Both civilian mail and military mail may be subject to censorship, and often different organisations perform censorship of these types of mail. In 20th century wars the objectives of postal censorship encompassed economic warfare, security
Security
Security is the degree of protection against danger, damage, loss, and crime. Security as a form of protection are structures and processes that provide or improve security as a condition. The Institute for Security and Open Methodologies in the OSSTMM 3 defines security as "a form of protection...

 and intelligence.

The study of postal censorship is a philatelic topic
Philately
Philately is the study of stamps and postal history and other related items. Philately involves more than just stamp collecting, which does not necessarily involve the study of stamps. It is possible to be a philatelist without owning any stamps...

 of postal history
Postal history
Postal history is the study of postal systems and how they operate and, or, the study of postage stamps and covers and associated material illustrating historical episodes of postal systems...

.

Military mail

Military mail
Military mail
A primary feature of military mail systems is that normally they are subsidized to ensure that military mail posted between duty stations abroad and the home country does not cost the sender any more than normal domestic mail traffic...

 is not always censored by opening or reading the mail, but this is much more likely during war time and military campaign
Military campaign
In the military sciences, the term military campaign applies to large scale, long duration, significant military strategy plan incorporating a series of inter-related military operations or battles forming a distinct part of a larger conflict often called a war...

s. The military postal service is usually separate from civilian mail and is usually totally controlled by the military. However both civilian and military mail can be of interest to military intelligence
Military intelligence
Military intelligence is a military discipline that exploits a number of information collection and analysis approaches to provide guidance and direction to commanders in support of their decisions....

, which has different requirements from civilian intelligence gathering
Intelligence (information gathering)
Intelligence assessment is the development of forecasts of behaviour or recommended courses of action to the leadership of an organization, based on a wide range of available information sources both overt and covert. Assessments are developed in response to requirements declared by the leadership...

. During wartime, mail from the front is often opened and offending parts blanked or cut out, and civilian mail may be subject to much the same treatment.

POW and Internee mail

POW and internee
Internment
Internment is the imprisonment or confinement of people, commonly in large groups, without trial. The Oxford English Dictionary gives the meaning as: "The action of 'interning'; confinement within the limits of a country or place." Most modern usage is about individuals, and there is a distinction...

 mail is also subject to postal censorship, which is permitted under Articles 70 and 71 of the Third Geneva Convention (1929–1949). It is frequently subjected to both military and civil postal censorship because it passes through both postal systems
Mail
Mail, or post, is a system for transporting letters and other tangible objects: written documents, typically enclosed in envelopes, and also small packages are delivered to destinations around the world. Anything sent through the postal system is called mail or post.In principle, a postal service...

.

Civil mail

Until recent years, the monopoly
Government monopoly
In economics, a government monopoly is a form of coercive monopoly in which a government agency or government corporation is the sole provider of a particular good or service and competition is prohibited by law...

 for carrying civilian mails has usually been vested in governments and this has facilitated their control of postal censorship. The type of information obtained from civilian mail is different from that likely to be found in military mail.

Countries known to have enacted postal censorship

Throughout modern history
Modern history
Modern history, or the modern era, describes the historical timeline after the Middle Ages. Modern history can be further broken down into the early modern period and the late modern period after the French Revolution and the Industrial Revolution...

 various governments, usually during times of war, would have to inspect mail coming into or leaving the country so as to prevent an enemy from corresponding with unfriendly entities within that country. There exist also many examples of prisoner of war mail from these countries which was also inspected or censored. Censored mail can usually be identified by various postmarks, dates, postage stamps and other markings found on the front and reverse side of the cover (envelope). These covers often have an adhesive seal, usually bearing special ID markings, which were applied to reclose and seal the envelope after inspection.

Britain & American colonies

During the years leading up to the American Revolution
American Revolution
The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free from the British Empire, combining to become the United States of America...

, the British monarchy in the American colonies manipulated the mail and newspapers sent between the various colonies in an effort to prevent them from being informed and from organizing with each other. Often mail would be outright destroyed.

American Civil War

During the American Civil War both the Union and Confederate governments enacted postal censorship. The number of Union and Confederate soldiers in prisoner of war camps would reach an astonishing one and a half million men. The prison population at the Andersonville Confederate POW camp alone reached 45,000 men by the war's end. Consequently there was much mail sent to and from soldiers held in POW installations. Mail going to or leaving prison camps in the North and South was inspected both before and after delivery. Mail crossing enemy lines was only allowed at two specific locations. |title=American Civil War: POW camp at Andersonville |accessdate=17 November 2010}}

Pre–World War I

In Britain, the General Post Office was formed in 1657, and soon evolved a "Secret Office" for the purpose of intercepting, reading and deciphering coded correspondence from abroad. The existence of the Secret Office was made public in 1742 when it was found that in the preceding 10 years the sum of £45,675 (a huge amount at that time) had been secretly transferred from the Treasury to the General Post Office to fund the censorship activities. In 1782 responsibility for administering the Secret Office was transferred to the Foreign Secretary and it was finally abolished by Lord Palmerston in 1847.

World War I

During the Great War (WWI) Postal censorship occurred in Great Britain, France, Germany and other various countries involved with that war.

Between the wars

Following the end of World War I there were some places where postal censorship was practiced. During 1919 it was operating in Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

, Belgium
Belgium
Belgium , officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO.Belgium is also a member of, or affiliated to, many...

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, German Weimar Republic
Weimar Republic
The Weimar Republic is the name given by historians to the parliamentary republic established in 1919 in Germany to replace the imperial form of government...

 and the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

. Other conflicts during which censorship existed were the Italian occupation of Ethiopia
Second Italo-Abyssinian War
The Second Italo–Abyssinian War was a colonial war that started in October 1935 and ended in May 1936. The war was fought between the armed forces of the Kingdom of Italy and the armed forces of the Ethiopian Empire...

 (1935–36) and especially during the Spanish Civil War
Spanish Civil War
The Spanish Civil WarAlso known as The Crusade among Nationalists, the Fourth Carlist War among Carlists, and The Rebellion or Uprising among Republicans. was a major conflict fought in Spain from 17 July 1936 to 1 April 1939...

 of 1936-1939.

World War II

During World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 both the Allies
Allies of World War II
The Allies of World War II were the countries that opposed the Axis powers during the Second World War . Former Axis states contributing to the Allied victory are not considered Allied states...

 and Axis instituted postal censorship of civil mail. The largest organisations were those of the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, though the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 employed about 10,000 censor staff while Ireland
Éire
is the Irish name for the island of Ireland and the sovereign state of the same name.- Etymology :The modern Irish Éire evolved from the Old Irish word Ériu, which was the name of a Gaelic goddess. Ériu is generally believed to have been the matron goddess of Ireland, a goddess of sovereignty, or...

, a small neutral country, only employed about 160 censors.

British censorship was mainly based at Aintree
Aintree
Aintree is a village and civil parish in the Metropolitan Borough of Sefton, Merseyside. It lies between Walton and Maghull on the A59 road, about north of Liverpool city centre, in North West England....

 (near Liverpool
Liverpool
Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...

) with nearly 20 other censor stations around the country. Additionally the British censored colonial and dominion mail at censor stations in the following places:
Dominions: Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, Newfoundland
Dominion of Newfoundland
The Dominion of Newfoundland was a British Dominion from 1907 to 1949 . The Dominion of Newfoundland was situated in northeastern North America along the Atlantic coast and comprised the island of Newfoundland and Labrador on the continental mainland...

, New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

, Southern Rhodesia
Southern Rhodesia
Southern Rhodesia was the name of the British colony situated north of the Limpopo River and the Union of South Africa. From its independence in 1965 until its extinction in 1980, it was known as Rhodesia...

 (not a dominion but supervised by the Dominion office) and Union of South Africa
Union of South Africa
The Union of South Africa is the historic predecessor to the present-day Republic of South Africa. It came into being on 31 May 1910 with the unification of the previously separate colonies of the Cape, Natal, Transvaal and the Orange Free State...

Colonies: Aden
Aden
Aden is a seaport city in Yemen, located by the eastern approach to the Red Sea , some 170 kilometres east of Bab-el-Mandeb. Its population is approximately 800,000. Aden's ancient, natural harbour lies in the crater of an extinct volcano which now forms a peninsula, joined to the mainland by a...

, Antigua
Antigua
Antigua , also known as Waladli, is an island in the West Indies, in the Leeward Islands in the Caribbean region, the main island of the country of Antigua and Barbuda. Antigua means "ancient" in Spanish and was named by Christopher Columbus after an icon in Seville Cathedral, Santa Maria de la...

, Ascension Island
Ascension Island
Ascension Island is an isolated volcanic island in the equatorial waters of the South Atlantic Ocean, around from the coast of Africa and from the coast of South America, which is roughly midway between the horn of South America and Africa...

, Bahamas, Barbados
Barbados
Barbados is an island country in the Lesser Antilles. It is in length and as much as in width, amounting to . It is situated in the western area of the North Atlantic and 100 kilometres east of the Windward Islands and the Caribbean Sea; therein, it is about east of the islands of Saint...

, Bermuda
Bermuda
Bermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...

, Ceylon, Cyprus
Cyprus
Cyprus , officially the Republic of Cyprus , is a Eurasian island country, member of the European Union, in the Eastern Mediterranean, east of Greece, south of Turkey, west of Syria and north of Egypt. It is the third largest island in the Mediterranean Sea.The earliest known human activity on the...

, Dominica
Dominica
Dominica , officially the Commonwealth of Dominica, is an island nation in the Lesser Antilles region of the Caribbean Sea, south-southeast of Guadeloupe and northwest of Martinique. Its size is and the highest point in the country is Morne Diablotins, which has an elevation of . The Commonwealth...

, Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

, Falkland Islands
Falkland Islands
The Falkland Islands are an archipelago in the South Atlantic Ocean, located about from the coast of mainland South America. The archipelago consists of East Falkland, West Falkland and 776 lesser islands. The capital, Stanley, is on East Falkland...

, Fiji
Fiji
Fiji , officially the Republic of Fiji , is an island nation in Melanesia in the South Pacific Ocean about northeast of New Zealand's North Island...

, Gambia, Gibraltar
Gibraltar
Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

, Gilbert and Ellice Islands
Gilbert and Ellice Islands
The Gilbert and Ellice Islands were a British protectorate from 1892 and colony from 1916 until 1 January 1976, when the islands were divided into two different colonies which became independent nations shortly after...

, Gold Coast
Gold Coast (British colony)
The Gold Coast was a British colony on the Gulf of Guinea in west Africa that became the independent nation of Ghana in 1957.-Overview:The first Europeans to arrive at the coast were the Portuguese in 1471. They encountered a variety of African kingdoms, some of which controlled substantial...

, Gibraltar
Gibraltar
Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

, Granada
Granada
Granada is a city and the capital of the province of Granada, in the autonomous community of Andalusia, Spain. Granada is located at the foot of the Sierra Nevada mountains, at the confluence of three rivers, the Beiro, the Darro and the Genil. It sits at an elevation of 738 metres above sea...

, British Guiana
British Guiana
British Guiana was the name of the British colony on the northern coast of South America, now the independent nation of Guyana.The area was originally settled by the Dutch at the start of the 17th century as the colonies of Essequibo, Demerara, and Berbice...

, British Honduras
British Honduras
British Honduras was a British colony that is now the independent nation of Belize.First colonised by Spaniards in the 17th century, the territory on the east coast of Central America, south of Mexico, became a British crown colony from 1862 until 1964, when it became self-governing. Belize became...

, Hong Kong
Hong Kong
Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

, Jamaica
Jamaica
Jamaica is an island nation of the Greater Antilles, in length, up to in width and 10,990 square kilometres in area. It is situated in the Caribbean Sea, about south of Cuba, and west of Hispaniola, the island harbouring the nation-states Haiti and the Dominican Republic...

, Kenya
Kenya
Kenya , officially known as the Republic of Kenya, is a country in East Africa that lies on the equator, with the Indian Ocean to its south-east...

, Malaya
British Malaya
British Malaya loosely described a set of states on the Malay Peninsula and the Island of Singapore that were brought under British control between the 18th and the 20th centuries...

, Malta
Malta
Malta , officially known as the Republic of Malta , is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, south of Sicily, east of Tunisia and north of Libya, with Gibraltar to the west and Alexandria to the east.Malta covers just over in...

, Mauritius
Mauritius
Mauritius , officially the Republic of Mauritius is an island nation off the southeast coast of the African continent in the southwest Indian Ocean, about east of Madagascar...

, Montserrat
Montserrat
Montserrat is a British overseas territory located in the Leeward Islands, part of the chain of islands called the Lesser Antilles in the West Indies. This island measures approximately long and wide, giving of coastline...

, New Hebrides
New Hebrides
New Hebrides was the colonial name for an island group in the South Pacific that now forms the nation of Vanuatu. The New Hebrides were colonized by both the British and French in the 18th century shortly after Captain James Cook visited the islands...

, Nigeria
Nigeria
Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...

, North Borneo
North Borneo
North Borneo was a British protectorate under the sovereign North Borneo Chartered Company from 1882 to 1946. After the war it became a crown colony of Great Britain from 1946 to 1963, known in this time as British North Borneo. It is located on the northeastern end of the island of Borneo. It is...

, Northern Rhodesia
Northern Rhodesia
Northern Rhodesia was a territory in south central Africa, formed in 1911. It became independent in 1964 as Zambia.It was initially administered under charter by the British South Africa Company and formed by it in 1911 by amalgamating North-Western Rhodesia and North-Eastern Rhodesia...

, Nyasaland
Nyasaland
Nyasaland or the Nyasaland Protectorate, was a British protectorate located in Africa, which was established in 1907 when the former British Central Africa Protectorate changed its name. Since 1964, it has been known as Malawi....

, Palestine
Palestine (mandate)
The British Mandate for Palestine, also known as the Palestine Mandate, The British Mandate of Palestine and the Mandate for Palestine, was a legal commission for the administration of Palestine, the draft of which was formally confirmed by the Council of the League of Nations on 24 July 1922 and...

, Penang
Penang
Penang is a state in Malaysia and the name of its constituent island, located on the northwest coast of Peninsular Malaysia by the Strait of Malacca. It is bordered by Kedah in the north and east, and Perak in the south. Penang is the second smallest Malaysian state in area after Perlis, and the...

, St. Helena, St. Lucia, St. Kitts and Nevis, St. Vincent
Saint Vincent and the Grenadines
Saint Vincent and the Grenadines is an island country in the Lesser Antilles chain, namely in the southern portion of the Windward Islands, which lie at the southern end of the eastern border of the Caribbean Sea where the latter meets the Atlantic Ocean....

, Sarawak
Sarawak
Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...

, Seychelles
Seychelles
Seychelles , officially the Republic of Seychelles , is an island country spanning an archipelago of 115 islands in the Indian Ocean, some east of mainland Africa, northeast of the island of Madagascar....

, Sierra Leone
Sierra Leone
Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the north and east, Liberia to the southeast, and the Atlantic Ocean to the west and southwest. Sierra Leone covers a total area of and has an estimated population between 5.4 and 6.4...

, British Solomon Islands, Somalia
Somalia
Somalia , officially the Somali Republic and formerly known as the Somali Democratic Republic under Socialist rule, is a country located in the Horn of Africa. Since the outbreak of the Somali Civil War in 1991 there has been no central government control over most of the country's territory...

, Sudan
Sudan
Sudan , officially the Republic of the Sudan , is a country in North Africa, sometimes considered part of the Middle East politically. It is bordered by Egypt to the north, the Red Sea to the northeast, Eritrea and Ethiopia to the east, South Sudan to the south, the Central African Republic to the...

, Tanganyika
Tanganyika
Tanganyika , later formally the Republic of Tanganyika, was a sovereign state in East Africa from 1961 to 1964. It was situated between the Indian Ocean and the African Great Lakes of Lake Victoria, Lake Malawi and Lake Tanganyika...

, Trinidad
Trinidad
Trinidad is the larger and more populous of the two major islands and numerous landforms which make up the island nation of Trinidad and Tobago. It is the southernmost island in the Caribbean and lies just off the northeastern coast of Venezuela. With an area of it is also the fifth largest in...

, Tonga
Tonga
Tonga, officially the Kingdom of Tonga , is a state and an archipelago in the South Pacific Ocean, comprising 176 islands scattered over of ocean in the South Pacific...

, Uganda
Uganda
Uganda , officially the Republic of Uganda, is a landlocked country in East Africa. Uganda is also known as the "Pearl of Africa". It is bordered on the east by Kenya, on the north by South Sudan, on the west by the Democratic Republic of the Congo, on the southwest by Rwanda, and on the south by...

, Virgin Islands
Virgin Islands
The Virgin Islands are the western island group of the Leeward Islands, which are the northern part of the Lesser Antilles, which form the border between the Caribbean Sea and the Atlantic Ocean...

 and Zanzibar
Zanzibar
Zanzibar ,Persian: زنگبار, from suffix bār: "coast" and Zangi: "bruin" ; is a semi-autonomous part of Tanzania, in East Africa. It comprises the Zanzibar Archipelago in the Indian Ocean, off the coast of the mainland, and consists of numerous small islands and two large ones: Unguja , and Pemba...

,


The USA censor staff count rose to 14,462 by February 1943 in the censor stations they opened in New York
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

, Miami, New Orleans, San Antonio, Laredo
Laredo, Texas
Laredo is the county seat of Webb County, Texas, United States, located on the north bank of the Rio Grande in South Texas, across from Nuevo Laredo, Tamaulipas, Mexico. According to the 2010 census, the city population was 236,091 making it the 3rd largest on the United States-Mexican border,...

, Brownsville
Brownsville, Texas
Brownsville is a city in the southernmost tip of the state of Texas, in the United States. It is located on the northern bank of the Rio Grande, directly north and across the border from Matamoros, Tamaulipas, Mexico. Brownsville is the 16th largest city in the state of Texas with a population of...

, El Paso
El Paso, Texas
El Paso, is a city in and the county seat of El Paso County, Texas, United States, and lies in far West Texas. In the 2010 census, the city had a population of 649,121. It is the sixth largest city in Texas and the 19th largest city in the United States...

, Nogales
Nogales, Arizona
Nogales is a city in Santa Cruz County, Arizona, United States. The population was 21,017 at the 2010 census. According to 2005 Census Bureau estimates, the population of the city is 20,833. The city is the county seat of Santa Cruz County....

, Los Angeles
Los Ángeles
Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, San Francisco, Seattle, Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

, San Juan
San Juan, Puerto Rico
San Juan , officially Municipio de la Ciudad Capital San Juan Bautista , is the capital and most populous municipality in Puerto Rico, an unincorporated territory of the United States. As of the 2010 census, it had a population of 395,326 making it the 46th-largest city under the jurisdiction of...

, Charlotte Amalie
Charlotte Amalie, United States Virgin Islands
-Education:St. Thomas-St. John School District serves the community. and Charlotte Amalie High School serve the area.-Gallery:-See also:* Anna's Retreat* Cruz Bay* Saint Thomas* Water Island-External links:* *...

, Balboa
Balboa, Panama
Balboa is a district of Panama City, located at the Pacific entrance to the Panama Canal.- History :The town of Balboa, founded by the United States during the construction of the Panama Canal, was named after Vasco Núñez de Balboa, the Spanish conquistador credited with discovering the Pacific Ocean...

, Cristóbal
Cristóbal, Colón
Cristóbal is a port in the Atlantic side of the Panama Canal. It is located on the western edge of Manzanillo Island and is part of the Panamanian city and province of Colón...

, David, Panama
David, Panama
David is a city located in the west of Panama. It is the capital of the province of Chiriquí and has an estimated population of 144,858 inhabitants as confirmed in 2010. It is a relatively affluent city with most families and houses having basic living requirements, such as concrete houses, clean...

 and Honolulu.

Neutral countries such as Ireland, Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 and Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 also censored mail even though they were not directly involved in the conflict.

Both blacklist
Blacklist
A blacklist is a list or register of entities who, for one reason or another, are being denied a particular privilege, service, mobility, access or recognition. As a verb, to blacklist can mean to deny someone work in a particular field, or to ostracize a person from a certain social circle...

s and whitelists were employed to observe suspicious mail or listed those whose mail was exempt from censorship. The United States blacklist, known as U.S. Censorship Watch List, contained 16,117 names.

Post–World War II

See also

  • American Civil War prisoner of war mail
  • Black room
    Black room
    While a black room or black chamber is often now used to refer to any place or organisation dedicated to code-breaking, its more exact meaning is a secret room in a post office, and, later and by extension, a telecommunications center used by state officials to conduct clandestine interception and...

  • Cabinet noir
    Cabinet noir
    Cabinet noir was the name given in France to the office where the letters of suspected persons were opened and read by public officials before being forwarded to their destination...

  • Israeli Military Censor
    Israeli Military Censor
    The Israeli Military Censor is a unit in the IDF Directorate of Military Intelligence which watches over the publication of information regarding the military network, and generally, the security of Israel. The Military Censor, as part of its duty, has authority to suppress information it deems...

  • Mail censorship in Ireland
  • Secrecy of correspondence
    Secrecy of correspondence
    The secrecy of correspondence ) or literally translated as secrecy of letters, is a fundamental legal principle enshrined in the constitutions of several European countries. It guarantees that the content of sealed letters is never revealed and letters in transit are not opened by government...

  • United States Office of Censorship
    Office of Censorship
    The Office of Censorship was an emergency wartime agency set up on December 19, 1941 to aid in the censorship of all communications coming into and going out of the United States.-Overview:...


External links

  • History comes to life with censored covers Linn's Stamp News
    Linn's Stamp News
    Linn's Stamp News an American publication, is the largest weekly newspaper for stamp collectors, with a paid circulation of just over 46,000 Circulation peaked at almost 92,000 in 1978 and has declined ever since because fewer new collectors are subscribing to replace those who subscribed in the...

  • Postalcensorship.com Website devoted to postal censorship with many examples of censored mail
    Mail
    Mail, or post, is a system for transporting letters and other tangible objects: written documents, typically enclosed in envelopes, and also small packages are delivered to destinations around the world. Anything sent through the postal system is called mail or post.In principle, a postal service...

  • Civil Censorship Study Group
  • Forces Postal History Society
  • Military Postal History Society
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