You still know what this is ? Yes, red/cyan glasses for viewing 3D stuff. I remember my father having a book 30 years back with theses images. So, this stuff is not exactly new, but lots of fun to experiment with ! I am not sure how to produce these anaglyph pictures before the digital age with "home" tools. At that time photographers were (are still?) using stereolenses (check Loreo at link) or a 2 camera-setup and looked at them with special stereo glasses. Check out this equipment at 3D Concepts (link). I am currently reviving this technology in panoramic terms but with a digital workflow, and because its digital, I move over with this topic to my digital panorama blog at panoramaxl.blogspot.com. Check out results there.