Stanley Lewis Engerman was an American economist and economic historian. He was known for his quantitative historical work along with Nobel Prize-winning economist Robert Fogel. His first major book, co-authored with Robert Fogel in 1974, was Time on the Cross: The Economics of American Negro Slavery. This significant work, winner of the Bancroft Prize in American history, challenged readers to think critically about the economics of slavery. Engerman has also published over 100 articles and has authored, co-authored or edited 16 book-length studies.