Direct support and general support maintenance repair parts and special tools lists ... : frequency meter AN/URM-79, FSN 6625-668-9749.

"August 1973."

Direct support and general support maintenance repair parts and special tools list for spectrum analyzers TS-723/U, TS-723A/U, TS-723B/U, TS-723C/U, and TS-723D/U (NSN 6625-00-668-9418).

"June 1976."

Operator's, organizational, direct support, and general support maintenance manual : spectrum analyzers TS-723A/U, TS-723B/U, TS-723C/U, and TS-723D/U (NSN 6625-00-668-9418).

"January 1976."