This was my own handbook that I used as a Field Engineer at Site C-6, Eglin Air Force Base in the early 1980s. I was a technician, working on the IBM 360 models 40 and 65, along with 2860/2870 Channels and the typical I/O, etc.
Handbooks included:
System/360, Model 65 - IBM original from October, 1969
Channels 2860 / 2870 / 2880 - IBM original from 1970
System/360 General - Authorized US Air Force copy from August, 1970
Diagnostic Reference Manual - Authorized US Air Force copy
System/360 Models 65, MP65, 75, 85 Diagnostics - Authorized US Air Force copy from December, 1969
Previously used condition - My name is written in marker on the cover of each of the handbooks.