Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools) : modem, telephone P TA-219/U, FSN 5805-503-1062.

"August 1974."

Operator's and organizational maintenance manual : modem, cable driver, MD-1025/G, (NSN 5820-01-145-4905).

Includes index.

Operator's and organizational maintenance manual : modem, cable driver, MD-1024/G (NSN 5820-01-145-4902).

Includes index.

Direct support and general support maintenance repair parts and special tools lists ... for radio teletypewriter, modem MD-522A/GRC (NSN 5815-00-919-4800).

"June 1979."

Direct support and general support maintenance : modem radio teletypewriter, MD-522A/GRC (NSN 5815-00-999-5277).

"11 May 1984."