Louis Morton Hacker (March 17, 1899 - March 22, 1987) was an American economic historian, Professor of Economics at Columbia University, and founding dean of its School of General Studies, and author. He is known as leading proponent of adult education.
Hacker, son of Morris and Celia (Waxelbaum) Hacker, was born and raised in New York City in Williamsburg, a neighborhood in Brooklyn. After attending the Brooklyn Boys' High School, he studied at Columbia College, Columbia University and Columbia University, where he obtained his AB in 1922, and his MA in 1923.
After graduation in 1923 Hacker started as assistant editor at the New International Encyclopedia, and was contributing editor at the New International YearBook. In 1935 he started as lifelong academic career at Columbia University as lecturer in economics. In 1942 he became Assistant Professor, in 1944 Associate Professor, and in 1948 full Professor. After his retirement in 1967 he was appointed Professor Emeritus. In 1952 he was the first dean of its School of General Studies, where he served until 1958.
In 1937 he had been Visiting Professor at the University Wisconsin, in 1939 at the Ohio State University, in 1945 at Utah State Agricultural College, in 1953 at the University Hawaii, and in 1970 at the University Puget Sound. In 1948 he had been appointed Harold Vyvyan Harmsworth Professor of American History for one year at the University of Oxford. In addition to the scientific work, he was involved in the American Civil Liberties Union.
Hacker was a leading proponent of adult education. In an interview he had explained:
Hacker's research interests were in the field of American history and its social economic development, as well as the life and work of some of its greatest entrepreneurs such as Andrew Carnegie, Alexander Hamilton and Joseph M. Proskauer.