Howdy Folks, I have a new (NOS) Field and Depot Maintenance manual for the AN/FGC-20 & -20X, AN/FGC-21 & AN/UGC-4 TTY machine. TM11-5815-200-35, T)31W4-2FGC20-4 dated 1959. Lots of schematics and other technical data. It came in a package of MD-522 manuals from eBay. Anyone need this manual? Larry K2JIA www.antiquetelephone.com