I think @Fatman that we all learn from each other; we do not all collect the same thing and not all have the same possibilities to find stuff. The forum covers three continents and it allows a lot of opportunities and discoveries of all kind. Some stuff is more common in a place than in another one, many of the trains you present are not easy to find in France, except maybe on auction sites, for me I prefer hunting in flee markets and shows. For the moment it is nowhere due to pandemic restrictions so no many new discoveries actually.
@Don McErlean using high voltage for trains was a common practice a long time ago, as live steam models, chemical experiences also.... some very hazardous experiments have been made by young boys in those times, security was a little different, today we are subject to too many rules of all kinds, but it is just my opinion. It was a way to learn the basics of electricity and mechanic.
Today i will just run a classic Lionel model in standard gauge of the Baby State set, original one of course. I am still missing the #310 railway mail car in the same condition, if someone has an extra one for sale do not hesitate to contact me....
Daniel