The Monster Manual (Advanced Dungeons & Dragons 2.0), personal collection
The Monster Manual is a library of monsters, as the title tells you. Inside it find a mediocre dragon and a very poorly drawn wizard, judging from the hat. I'm one to judge since I drew hundreds of wizards and dragons once, copying out the drawings from this very same book, hoping to learn to draw them well by mimicry. In fact the only things I could ever draw were trees—and not well.
This particular manual directed a large portion of my teenage years, as it did for many (or some, anyhow) of you who are reading