Thomas McCrae (physician)
Thomas McCrae was Professor of Medicine at Jefferson Medical College, and student and later colleague of Sir William Osler
William Osler
Sir William Osler, 1st Baronet was a physician. He was one of the "Big Four" founding professors at Johns Hopkins Hospital as the first Professor of Medicine and founder of the Medical Service there. Sir William Osler, 1st Baronet (July 12, 1849 – December 29, 1919) was a physician. He was...

. Often quoted in medical training for his remark "more is missed by not looking than not knowing".

Early life and medical training

Thomas McCrae was born in Guelph
Guelph is a city in Ontario, Canada.Guelph may also refer to:* Guelph , consisting of the City of Guelph, Ontario* Guelph , as the above* University of Guelph, in the same city...

, Ontario
Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, 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...

 to Lieutenant-Colonel David McCrae and Janet Simpson Eckford McCrae. His brother, John McCrae
John McCrae
Lieutenant Colonel John Alexander McCrae was a Canadian poet, physician, author, artist and soldier during World War I and a surgeon during the Second Battle of Ypres...

 is best known for authoring "In Flanders Fields
In Flanders Fields
"In Flanders Fields" is one of the most notable poems written during World War I, created in the form of a French rondeau. It has been called "the most popular poem" produced during that period...


McCrae trained in medicine at the University of Toronto
University of Toronto
The University of Toronto is a public research university in Toronto, Ontario, Canada, situated on the grounds that surround Queen's Park. It was founded by royal charter in 1827 as King's College, the first institution of higher learning in Upper Canada...

, obtaining his Doctorate of Medicine in 1903.

He became an assistant resident at Johns Hopkins Hospital
Johns Hopkins Hospital
The Johns Hopkins Hospital is the teaching hospital and biomedical research facility of Johns Hopkins University School of Medicine, located in Baltimore, Maryland . It was founded using money from a bequest by philanthropist Johns Hopkins...

 in 1895 in Baltimore
Baltimore is the largest independent city in the United States and the largest city and cultural center of the US state of Maryland. The city is located in central Maryland along the tidal portion of the Patapsco River, an arm of the Chesapeake Bay. Baltimore is sometimes referred to as Baltimore...

, Maryland and was later joined by his brother in 1899. It was there that he became associated with Dr William Osler (later Sir William) who was the "pre-eminent medical educator of his time".

McCrae's association with Osler continued with their collaboration in The Principles and Practice of Medicine
The Principles and Practice of Medicine
The Principles and Practice of Medicine: Designed for the Use of Practitioners and Students of Medicine is a medical textbook by Sir William Osler. It was first published in 1892 while Osler was Professor of Medicine at Johns Hopkins University. It established Osler as the world's leading authority...

, an authoritative medical text at the time. McCrae was initially assistant editor, but later became the editor of this text upon Osler's death.

Later career

In 1912 he became Professor of Medicine at Jefferson Medical College in Philadelphia.

"In 1924, he was Lumleian lecturer at the Royal College of Physicians
Royal College of Physicians
The Royal College of Physicians of London was founded in 1518 as the College of Physicians by royal charter of King Henry VIII in 1518 - the first medical institution in England to receive a royal charter...

 in London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

. He was chairman of the Section on Practice of Medicine of the American Medical Association
American Medical Association
The American Medical Association , founded in 1847 and incorporated in 1897, is the largest association of medical doctors and medical students in the United States.-Scope and operations:...

, 1914-1915. From 1916 to 1925 he was secretary of the Association of American Physicians
Association of American Physicians
The Association of American Physicians is a medical society founded in 1885 by the Canadian physician Sir William Osler and six other distinguished physicians of his era, for "the advancement of scientific and practical medicine." Election to the AAP is an honor extended to individuals with...

 and in 1930 its president."

McCrae died in 1935 with no children to survive him. He is described in an obituary in the Canadian Medical Association Journal
Canadian Medical Association Journal
The Canadian Medical Association Journal is a general medical journal that is published biweekly by the Canadian Medical Association . It covers research and ideas aimed at improving health for people in Canada and globally. CMAJ publishes original clinical research, analyses and reviews, news,...

as a "deep student, a fine clinician, (and) a great teacher".
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