HP 00345-90007 1974 Model 354A Coaxial Step Attenuator Operating Note Manual.

HP 03490-90014 1974 Model 3490A Multimeter Operating & Service Manual.

HP MODEL 1120A 500MHz PROBE OPERATING NOTE

HP 00435-90006 1974 Model 435A Power Meter Operating Information Manual.

HP 01331-90907 1974 Model 1331C X-Y Display Operating & Service Manual.

HP 00651-90007 1974 Model 651B Test Oscillator Operating & Service Manual.

HP 00432-90013 1974 Crystal Detector 423A 8470A Operating Note Manual.

HP 1968 Model 15127A Cable Amplifier Operating Note Manual.