I never commented here. Weird.
I had some of the Transformers ones, too.
I remember fondly the Time Machine series. I think they were a spinoff from the CYOA line. The main CYOA writer (Peck? Packard?) wrote several of them. You go back in time to find some artifact, or answer some question, and some choices had links to an appendix that would offer advice based on the historical introduction. You also had to pick a certain number of items to take with you from a list of possibilities, and what you took would make a difference during the story. Only problem was you couldn't lose; worst case, you went back to the beginning. (The explanation was that the book was an actual time machine, and it would save you if you were ever in danger.)
But that series got me hooked on feudal Japan and the sword-wielding folks who lived there, and you actually did learn some history from the books. Not a lot, but some.
*--For behavior unbecoming anyone, perpetrated in real time over an extended--AH, FUCK IT! MORE MALIBU, BITCHES!!