I got this book, "The Clear Creek Bike Book," when I purchased my Fiorelli Milano San Remo road bike around the time of the First Oil Shock.
It is excellent.
Headsets, shifters, and brakes have moved on from the designs of the 70s but otherwise it is a very good bicycle manual … technically and politically.
Really gives you a feel for the times, the early 1970s.
https://archive.org/details/clearcreekbikebo0000aign/page/n3/mode/2up?view=theater