History of Photography
The History of Photography from its beginnings to the 1920s by Dr. Robert Leggat. Contains descriptions of the history of the genre, significant people and 64 separate processes. A wealth of knowledge, and a British site.
Photographika.com
The site for collectors of classic, antique, and vintage cameras and photographic images, and those interested in the history of photography, and information about cameras and photographic history
Old Timer Cameras
Camera Instruction Manuals, Test Reports and Repair Manuals
A Photgraphic index of the web !!
If you can't find it here, you'll just have to Google it.
An index of over 100 specialist camera shops for used cameras
Need an old camera?, best place to find one
Footsteps
Quality reproductions of old photographs, mostly Edwardian views
The Canon FD Documentation Project
Documentation on everything (just about) in the Canon FD range.