Joel Weintraub, a New Yorker by birth, is an emeritus biology professor at California State University, Fullerton. He became interested in genealogy over 20 years ago and volunteered for nine years at the National Archives in southern California. Joel helped produce location tools for the 1900 through 1950 federal censuses, and the New York State censuses for New York City (1905, 1915, 1925) for the Steve Morse “One-Step” website. He has published articles on the U.S. census and the 72-year rule, the name change belief and finding difficult passenger records at Ellis Island, and searching NYC census records with the problems of NYC geography