I use to collect SP and ATSF timetables. I would just ask the yardmaster and they would hook a kid up. I once wondered into the (then) closed in 1970 ATSF depot in The Grand Canyon. I found all of these golden colored, small ATSF envelopes and paper. Wish I had some of the sheets of those today. I use to write the railroads and ask for calenders. I remember when I was a teenager and mad at my parents, I wrote the UP ask them if they had any jobs for a kid, so I could move out. I was 13 and they actually sent me a letter and application.