National Stereoscopic Association [http://www.stereoview.org]
Magic Lantern Society of US and Canada [http://www.magiclanternsociety.org/]
Keystone Mast Collection at U. California, Riverside [http://www.cmp.ucr.edu/mainFrame/collections/guides/kmast/]
New York Public Library Picture Collection Online [http://digital.nypl.org/mmpco/]
US Library of Congress Prints and Photographs Online Catalog [http://www.loc.gov/pictures/]
Luminous Lint, an online collectors resource [http://www.luminous-lint.com/]
British Photographic History [http://britishphotohistory.ning.com/]
Getty Museum Digital Collections [http://search.getty.edu/gateway/landing]
California Museum of Photography [http://www.cmp.ucr.edu/]
George Eastman House, Rochester, NY [http://www.eastmanhouse.org/]
Johnson-Shaw Stereographic Museum [http://www.johnsonshawmuseum.org/]
Photographic Historical Society of New England [http://www.phsne.org/]
"Wiggle" stereoviews of Japan. [http://fiveprime.org/hivemind/Tags/japanese,thiopheneguy]
Stereo Photomaker software for digital presentation of stereoviews by Masuji Suto [http://stereo.jpn.org/eng/stphmkr/]
Dan Shelly's 3D Links [http://www.dddesign.com/3dbydan/]
K&J Jacobson [http://www.jacobsonphoto.com/]
Stereographica Online Auctions