Hi Frank
When I first started working in a lab in London in the 80s, I was on the 20x24 copy/process camera a lot of the time doing either line negs, (text and illustrations) or PMTs, (Photo Mechanical Transfers), and certainly, all the material was Agfa based. I'm not sure where you are based in the world, but if by chance you are in London, best to get your friend in touch with Heather and give it to her instead of the dump as I'm sure even the oldest litho film can still be processed sympathetically for alternative process negatives. PMTs haven't been used for about 20 years. Probably a process many here do not know of. They were exposed onto a negative sheet of PMT paper through a process camera and then transferred to a positive sheet through a simple machine containing a single dev/fix bath and rollers which pressed the two sheets together. When peeled apart you had a positive line print. It would be a shame, (though inevitable sadly), to see a process camera on the dump, though I expect that's where most of them ended up. With a bit of effort and a lot of imagination, the lens, bellows and glass could be used to make a mean, home made 20x24 camera.
Just an idea!
Cheers
Mike