Maybe someone does have some papers, but generally old stuff the mechanic just looks at the prints and figures out what to jump for what he's doing. Really there's not going to be much on a 1965 elevator, no unintended motion etc. If you have prints you should be able to determine what terminals are your limits, SOS, what to jump to run it on inspection etc.
Elevators made back then relied on knowledgeable mechanics. You have to remember back then it was still your own fault if you hurt yourself, different times.
