The expression Maceo-Dickinson line was used in Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

 in the early/mid 20th century referring to the Galveston County line. The expression was a pun

Pun

The pun, also called paronomasia, is a form of word play which suggests two or more meanings, by exploiting multiple meanings of words, or of similar-sounding words, for an intended humorous or rhetorical effect. These ambiguities can arise from the intentional use and abuse of homophonic,...

 which made reference to the Mason-Dixon line

Mason-Dixon line

The Mason–Dixon Line was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon in the resolution of a border dispute between British colonies in Colonial America. It forms a demarcation line among four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and...

. From the 1920s to the 1940s the Maceo crime syndicate

Sam Maceo

Salvatore Maceo, also known as Sam Maceo, was a businessman, community leader, and organized crime boss in Galveston, Texas in the United States. Because of his efforts, Galveston Island became a nationally known resort town during the early and mid 20th century, a period known as Galveston's Open...

 controlled Galveston, Texas

Galveston, Texas

Galveston is a coastal city located on Galveston Island in the U.S. state of Texas. , the city had a total population of 47,743 within an area of...

 and established a gambling empire there that ran through much of the county, including casino

Casino

In modern English, a casino is a facility which houses and accommodates certain types of gambling activities. Casinos are most commonly built near or combined with hotels, restaurants, retail shopping, cruise ships or other tourist attractions...

s in Dickinson, Texas

Dickinson, Texas

Dickinson is a city in Galveston County, Texas within the Houston–Sugar Land–Baytown metropolitan area. The population was 17,093 at the 2000 census.-History:...

. The county had a notoriously lax law enforcement environment which represented a sharp contrast with neighboring counties.

For more information, see

• Free State of Galveston
  Free State of Galveston
  The Free State of Galveston was a whimsical name given to the island city of Galveston in the U.S. state of Texas during the early-to-mid-20th century. Today, the term is sometimes used to describe the culture and history of that era...
  
  , which discusses this era in Galveston's history.
• Sam Maceo
  Sam Maceo
  Salvatore Maceo, also known as Sam Maceo, was a businessman, community leader, and organized crime boss in Galveston, Texas in the United States. Because of his efforts, Galveston Island became a nationally known resort town during the early and mid 20th century, a period known as Galveston's Open...
  
   and Rosario Maceo
  Rosario Maceo
  Rosario Maceo , also known as Papa Rose or Rose Maceo, was a Sicilian immigrant and organized crime boss in Galveston, Texas in the United States. Because of his efforts and those of his brother Sam, Galveston Island became a nationally known resort town during the early and mid 20th century,...
  
  , the brothers that ran the gambling empire.