The Margaret Sanger Papers Project is a historical editing project formed by Esther Katz and sponsored by the NYU’s Department of History and Division of Libraries to locate, arrange, edit, research, and publish the papers of the noted birth control pioneer. The project has published a two-series edition and a four-volume book edition of Sanger’s Papers as a result of work rearranging and organizing over 50,000 documents and a ten-year international search of over 1,500 archives and private collection.