A series of digest-sized books for the Mystara setting. Each of these supplements gives an overview of the various nations of the known world, and a full year's calendar of events that can be used as plot hooks for adventures. Each one also came with a map detailing an area of interest that had undergone significant changes since the preceding game year.
Following the Mystara setting becoming part of the Advanced Dungeons & Dragons (2nd Edition) RPG, the Poor Wizard's Almanacs were rebranded as Joshuan's Almanac. Sales were not sufficiently high though, and the line was ultimately dropped by TSR.