I suspect I purchased this book, I suspect, in the mid-1990s as I was creating all my puzzle curricula. It sure seems like a good fit for what I was doing at the time. There are several classic puzzles presented, but other good ideas are here too.
Lots of poorly presented creativity techniques. Too many brainteasers that don't seem to serve a purpose. For a much better presentation of the same material, check out Thinkertoys.