http://www.geh.org/fm/stieglitz/htmlsrc/stieglitz_sum00002.html

http://www.masters-of-photography.com/S/stieglitz/stieglitz_hands_and_thimble_full.html

http://www.pbs.org/wnet/americanmasters/database/stieglitz_a.html

http://en.wikipedia.org/wiki/Alfred_Stieglitz

http://www.artsmia.org/get%2Dthe%2Dpicture/stieglitz/

http://www.morehousegallery.com/gallery/artists.asp?Mode=Results&ArtistID=11&UniqueURL=
10%2F31%2F2002%2B8%3A14%3A57%2BPM

http://www.phillipscollection.org/american_art/artwork/Stieglitz-Equivalent_Series1.htm

    Source: geocities.com/sumsurf812