AECo 1975 Catalogue, Section N - includes 120 type payphones! - http://tinyurl.com/78yxwvp
AECo 3 Slot Drawings - http://www.islandregister.com/phones/gte%20payphones.pdf
Converting an A/E 3 Slot LPB 82 prepay Payphone for Home Use - http://www.islandregister.com/phones/3slot.html
See Stan Schreier's Controller Design:
http://www.classicrotaryphones.com/forum/index.php?topic=8522.0
3 Slot Payphone Controller - http://oldphoneguy.com/images/WordConv2PDF2.pdf
Another Payphone Controller - http://atcaonline.com/controller.html
Yet another Controller - http://mysite.verizon.net/dalderdi/phones/payphone.htm
If you find any other resources which should be added to this list, pass the info on to me, and I will post it.
Dave