The Photo League that he started in 1936 consisted of American photographers of the mid-20th century. It was active in New York from 1936 to 1951, from the end of the Great Depression to the start of the Cold War. Capturing city life, it featured more than 140 works by photographers including Berenice Abbott, Sid Grossman, Lisette Model, Aaron Siskind, and Weegee.
The members believed that documentary photography had power and influence. They rejected the style of modernism to show the reality of city life, mostly focusing on New York and the ordinary people. This meant they explored neighbour hoods and each street taking images. A leading member, Sid Grossman, made students discover not just the meaning of their work but