James Thomas Flexner was born January 13, 1908, inManhattan. His father wasSimon Flexner, a sixth-grade dropout who became a self-taught microbiologist, pathologist, director of theRockefeller Institute for Medical Research in New York City and discoverer of a cure forspinal meningitis. His mother wasHelen Thomas [Flexner], a professor of English atBryn Mawr whose sister was president of the college.[3][5] In 1929, Flexner graduatedcum laude fromHarvard University, and found work as a reporter for theNew York Herald Tribune. In 1931, he took a position at theNew York City Department of Health as an executive secretary. The following year, he left his job to devote his full energies to writing. Although untrained inart history, he gravitated to art subjects as part of his interest in writing about American history.[5]
Flexner is known best forGeorge Washington, a four-volume biography published byLittle, Brown from 1965 to 1972. He won aspecial Pulitzer Prize for the work in 1973.[2] He wrote other historical biographies, includingThe Young Hamilton (onAlexander Hamilton),Mohawk Baronet (onSir William Johnson, 1st Baronet), andThe Traitor and the Spy:Benedict Arnold andJohn André. He wrote many books on the history of American art, including a highly regarded life of the American painterJohn Singleton Copley. He and his father, Simon Flexner, M.D., co-wroteWilliam Henry Welch and the Heroic Age of American Medicine (1941). (His uncle, Abraham Flexner, was the educator whose 1910 report led to the reform of United States medical schools.)
Flexner died February 13, 2003, at his apartment in New York City at the age of 95.[3]