Operator's, organizational, DS, GS, and depot maintenance manual : electronic marker generator AN/USM-271 (NSN 6625-00-982-1543).

"February 1971."

Operator's and organizational maintenance manual : multiplexer TD-976/G (NSN 7025-01-048-9678) and pulse form restorer TD-982/G (NSN 7025-01-061-1245).

"October 1979."