AMIA-L
The Association of Moving Image Archivists  maintains a listserv focusing on topics relating to the preservation of moving images. [email protected] for posting; [email protected] to subscribe.

Dave Jones Design
Specializes in custom designs of equipment and systems for artists and has assisted museums in re-creating installations which depend on obsolete equipment and techniques.

Dead Media Project
The site has extensive links to technology and a discussion group. The Working Notes contains information about devices.

Bob Ketchum A Timeline of Audio/Video Technology

Labguy's The History of the Video Tape Recorder before Betamax and VHS

Museum of Early Video Editing Equipment and Techniques

Steve Schoenherr Recording Technology History

VidiPax
VidiPax has an on-line museum. The VidiPax web site includes articles and a video preservation links section. Links range from associations, organizations and professional groups to technical resources

Video Expert
Detailed technical information about video, and how it works. Includes description of how analog video is recorded, and the use of test signals and equipment