Originally posted by Hilo Of course it is a guess and I risk to be stoned, but I would say the majority were taken with ANY brand camera, and then mostly with standard lenses, and then with Tri-X at 400 ASA...
I concur. 35mm camera of choice with normal or moderate wide-angle (35mm or 40mm) lens and Tri-X would have been the standard for photography of the type posted above for the era in which it was taken (1968). For a pro, the camera of choice represented a wide gamut. Pentax, Nikon, Topcon, Exakta, and Leica at the top of the list with a host of others further down.
As for availability of data, much depends on the photographer. Some kept meticulous records (Ansel Adams). Others are known for their tools and while records were not kept, we know what was used (Cartier-Bresson). Sometimes we at least know the film based on where it was published (National Geographic was pure Kodachrome for many years). For most, we know nothing.
Steve