[GreenKeys] wanted - Navy manuals and gear

[Nick England]

For some strange reason, I've gotten interested in 1950's Navy RTTY systems.

I'm currently looking for the following. Please let me know if you can help
or have any suggestions:
- manual or schematic for AN/SGC-1 TU (Navships 91152)
- manual or schematic for CV-89/URA-8 AFSK converter 
- manual, schematics, or parts for AN/FGC-5 TTY mux system (Navships 91265A)
- CV-127/FRR-24 FSK converter and any other parts of FRR-24, FRR-37, or
FRR-10 diversity receivers
- any info about how the above receivers were used by the US Navy.
Thanks,
Nick KD4CPL
http://www.virhistory.com/ham/frr24.htm