Geoffrey Biddle started taking photographs when he was a senior in high school, in 1967. He has been a location photographer, working for a wide variety of editorial and corporate clients, and he has taught photography extensively, including at Parsons School of Design, where he served as Assistant Chair of the Photography Department from 1994 to 2000. He collaborated with his wife, Jane Gottesman, on "Game Face: What Does A Female Athlete Look Like?" and "Showing (work x family)". His books include "Alphabet City" (University of California Press, 1992), "Sydney and Flora" (Turtle Point Press, 2009), and "God Bless America" (2007), for which he also collaborated with Gottesman. His work is in multiple collections, including the Museum of Modern Art. The "Alphabet City" photographs and papers were acquired by The New York Public Library in 2017. In 2023 Working Assumptions published a pair of memoirs titled "Rock in a Landslide" and "Eve and Me", which recount his life with his late wife, Mary Ann Unger, in his roles as partner, parent and caregiver.