Volo's Student's Guide to
The Savage Coast
Although part of Mystara, the Savage Coast has its own dangers, so student's may wish to pick up this travel guide as well. For one thing, the climate itself is lethal to anyone who doesn't wear cinnabryl armor. (See! We can warn you of potentially lethal threats right off the bat!)
The Savage Coast is the one place in Mystara with gunpowder weapons (why these things never spread past isolated geographical locations we can't say; 'scuse me while I hang this lampshade over here... and done).
(see also: The Squad)