1. Simple Bouguer gravity anomaly map of Northern New York Yale Public content 1973. 2018-06-14T19:44:15Z. 2018-06-14T19:44:15Z. Simmons, Gene. University of the State of New York, State Education Dept. English. cartographic image. Public. New York (State), Estados unidos., États-Unis, and New York (N.Y.).