I find it amazing that there is as much documentation as there is on our cars. For those not as long in the tooth, you may not realize how archaic records were in the late 60's to early 70s. Computers, when used, consisted of big rooms full of equipment which processed input once a day or so. Input was a big stack of cards with holes in them, one line of code per card. And much archive storage was mini-pictures of paper printouts. I'm glad some archives have survived in places like PHS and a few packrat individuals.
