Collections of historical dance photographs feature specific dancers from late 19th and early 20th centuries. Photos range from publicity stills to professional photographers' vintage prints. Isadora Duncan, Ruth St. Denis, Irene and Vernon Castle & more.

http://digitalgallery.nypl.org/nypldigital/explore/dgexplore.cfm?topic=arts&collection_list=DanceinPhotographsan&col_id=216