I just got some 1967 Zenith full-line (!) sales brochures from ebay that are just too good not to share and I have access to a giant scanner.
What keeps from doing so is limited memory space on what I've attached over the years.
Using a hosting service to link in content is too complicated.
It would be nice to have a tab like vintagehifi.net where members upload schematics, service manuals and sales artwork.