Back in those days you could write to Xerox PARC to request their Tech Reports and a few days later they’d show up in your (physical) mail box! I got quite a few reports that way, learned a bunch, and even did toy implementations of some things such as the RIP, SPP protocols and so on. I learned about RPC from Bruce Nelson’s thesis and got a chance to use it for a client in 1984!

I may still have this Mesa book somewhere.... On a quick rereading I realize it was basically a variation on Pascal, with a few things cleaned up or made more convenient.