Bre has some great photos from the Museum of Telecommunication, he writes -
The Museum of Telecommunication, aka, The Telephone Museum, is a must see for any tinkerer. Run by folks who spent a good chunk of time working for the phone company, this place is a treasure trove of gadgets and telecommunication devices. Rich Barger took my friends and I on a tour around 2 floors of amazing clicking machines and explained the magic of telephones, switchboards, relays, and showed us how it all works. If there is a machine that has been used in communicating over wires, they’ve got it there and it works.
The Museum of Communications – Link.