Apparently this book I picked up at a thrift shop is part of a huge set. Because I'm a completionist and a book goblin.. I must have them all. Apparently they're old and I'll be piecing it together probably from eBay or sheer dumb luck. Weeeeee!!!!
@Kaysymmetry Probably! This one is from 1989. I was only 7 when it was printed. Challenge accepted. π