My father had a lot of model railroad friends around the USA and in other countries. He frequently named his structures for them. My father also approached model railroading from the fun and humorous angle - witness the name of his MRR. My father took a lot of his MRR photos in black & white as he was a frequent contributor to the NMRA Bulletin which was a B&W publication back then. He also took numerous color slides which I have and have struggled to covert decently (I know I can pay to get that done but it is expensive).
My father and many of his friends used to exchange tape/slide presentations on their modeling work. The tape part was cassette tapes - not very easy to deal with these days. I still have these.