I own the first 4 books listed here, going from left to right.
I do, also have a, "Tips and Tricks" magazine, the last one that featured a section of TG-16 cheats. After that month, I never saw that section in that magazine again. That magazine is well-worn, since at the time, when I used those cheats/codes, it was easier to lay on a chair, tv-tray, etc, than a, "normal" book. That magazine taught me how to access the cheats in Somer Assault, and get to the flashing screen that may cause epileptic fits!
I'll post pics of it here, later.