[ProtectOurFreedom]

I used Telex all the time to communicate to the home office from remote job sites around the world - mid 70s.

I rode on steam locomotive trains.

The phone booth in remote China was powered by a stack of battery cells about 3" diameter and 10" tall. Similar to the EverReady No. 6 "Dry Cell":

[GingisK]

That battery (or one like it) was the very first mass-produced electrical product in the world, made available in the year 1800. It was marketed toward electrical experimenters.