Yes, I had picked up a 1977 home wiring book a few years ago on my travels which quoted a some parts of the '75 NEC, and I noticed that many of the rules in article 220 re branch circuits are pretty much the same.
The book just arrived yesterday, so I'll start comparing when I get the time (my thanks to you for supplying the other half of the comparison!)
I put in a small bid on a 1962 NEC that was being auctioned by the same seller. It finally went for over $25!
[This message has been edited by pauluk (edited 01-30-2003).]