HP 59401-90000 1975 Model 59401A Bus System Analyzer Operating Manual.

Keysight 01620-90903 Model 1620A Pattern Analyzer Operating & Service Manual

HP 01620-90901 1974 Model 1620A Pattern Analyzer Operating & Service Manual.

HP 5340A Frequency Counter Operating and Service Manual 05340-90021 Sept. 1975

HP 00333-90008 Model 331A/332A Distortion Analyzer Operating and Service Manual

HP 08903-90062 Model 8903E Audio Analyzer Service Manual.

HP 08444-90012 1975 Model 8444A Tracking Generator Operating & Service Manual.

HP 1611A Logic State Analyzer Operating and Service Manual