The NY Public Library has come up with a Stereogranimator:
Create and share animated GIFs and 3D anaglyphs using more than 40,000 stereographs from The New York Public Library.
Witness the Stereogranimator in action:
GIF made with the NYPL Labs Stereogranimator
Made from this original stereograph:
Acrobats far from their mountain home — grizzly bears in a street at Jacksonville, Florida
ID: G90F124_047F – NYPL Digital Gallery
via Nan Rubin.