TM 11-809-20.PDF  Organizational Maintenance, Radio Transmitters, T-368/URT, T-368A/URT, T368B/URT, and T-368C/URT and Antenna Tuning Unit BC-939-B.  July 1958.
TM 11-809-35.PDF  Field and Depot Maintenance, Radio Transmitters, T-368/URT, T-368A/URT, T368B/URT, and T-368C/URT and Antenna Tuning Unit BC-939-B.  December 1958.
TM 11-809.pdf  Operator's Manual for Radio Transmitter T-368/URT and Antenna Tuning Unit BC-939-B.  April 1955.
TM 11-809-10.PDF  Operator's Manual for Radio Transmitters, T-368/URT, T-368A/URT, T368B/URT, and T-368C/URT and Antenna Tuning Unit BC-939-B.  May 1958.

These files are made available with the compliments of August Johnson, KG7BZ.