Joe Gould's Secret is a 1965 book by Joseph Mitchell, based upon his two New Yorker profiles, Professor Sea Gull (1942) and Joe Gould's Secret (1964). Mitchell's work details the true story of the eponymous Joe Gould, a writer who lived in Greenwich Village in the first half of the 20th century. Gould was an eccentric, bridging the gap between bohemianism and the beat generation, though he was an outspoken critic of both. This criticism alienated him from the social circles of poets, authors, and artists of his time, and instead he focused on documenting the history of what he called the "shirt-sleeved multitude."