If you needed something ridiculously exotic – like a M13/40 or a 2 ton truck, it was off to Airfix magazine back issues to convert something or Almark scale drawings to scratch build it
I did that. I can’t recall the books name but it had a colour drawing of an M13/40 on the front.. perhaps the background was a red/black diagonal. All glossy pages black and white photos. I did 5 from sheet plastic. I thought they looked good. No photos of course, no camera.