When Mr Slate, Fred Flintstone's boss at the Bedrock quarry, tasks Fred with managing a big new project, Fred heads down to the Bedrock book shop, and this is the book he finds.
Oh, all right, it's not *quite* that old, but it's still got the feel of the antique about it, with many discussions about specific PM programs which could be run on the computer hardware of the day, including the then-still-almost-current UNIVAC.
Consequently, it has both a lot of material on the theory and practise of planning & dependency networks and various forms of scheduling (mostly in the manufacturing or construction fields), using both manual methods and new-fangled computing engines. It's a very deep book - going far more into the detail and theory than most modern PM books that I've read - not least because modern software does so much of this for you.
Educational in the theory, but I did find that the extensive details of various historic computers and their software wore pretty thin after a while.