Frederick Lewis Allen (July 5, 1890 – February 13, 1954) was the editor of Harper's Magazine and also notable as an American historian of the first half of the twentieth century. His specialty was writing about what was at the time recent and popular history.
Allen was born in Boston, Massachusetts. He studied at Groton, graduated from Harvard University in 1912 and received his Master's in 1913. He taught at Harvard briefly thereafter before becoming assistant editor of the Atlantic Monthly in 1914, and then managing editor of The Century in 1916. He began working for Harper's in 1923, becoming editor-in-chief in 1941, a position he held until shortly before his death, aged 63, in New York City. His wife, Dorothy Penrose Allen, died just prior to the 1931 publication of his best-known book, Only Yesterday.
Allen's popularity coincided with increased interest in history among the book-buying public of the 1920s and 1930s. This interest was met, not by the university-employed historian, but by an amateur historian writing in his free time. Aside from Allen, these historians included Carl Sandburg, Bernard DeVoto, Douglas Southall Freeman, Henry F. Pringle, and Allan Nevins (before his Columbia appointment).
His most famous book was the enormously popular Only Yesterday (1931), which chronicled American life in the 1920s. Since Yesterday (1940), a sort of sequel that covered the Depression of the 1930s, was also a bestseller. The 1933 Hollywood film "Only Yesterday" was ostensibly based on his book, but actually used only its timeline, with a fictional plot adapted from a Stefan Zweig novel.
He wrote the Introduction to Dr Mabel S Ulrich's collection of essays by notable woman writers of the day, including Mary Borden, Margaret Culkin Banning, Sylvia Townsend Warner, Susan Ertz, E. M. Delafield, Rebecca West, Isabel Paterson and Storm Jameson, The More I See Of Men (Harper & Brothers, 1932).