Wilderlands of High Fantasy (1977)

From the web:

The first of four D&D supplements from Judges Guild that detail their campaign world. Detailed wilderness maps are supplied along with details on ruins, relics, towns, treasures, caves, lairs, islands, castles, streams, burrows, prospecting, hirelings, economics, and so on.

Consists of two 16-page booklets (one 32-page booklet in later printings) and six double-sided 17" x 22" maps (3 for the judge, 3 for the players):

• Issue N, Guidelines Booklet

• Issue O, Guidelines Booklet

- or -

• Issues N and O Guidelines Booklet

- and -

• Campaign Map 1: City State of the Invincible Overlord

• Campaign Map 2: Barbarian Atlantis

• Campaign Map 3: Valley of the Ancients

• Campaign Map 4: Tarantis

• Campaign Map 5: Valon

This campaign setting includes information on the villages, populations, leaders, technological levels, citadels and castles, and wilderness monster lairs of these areas. The first of the Wilderlands Series, it covers the settlements of the City State of the Invincible Overlord, Tegel Manor, Modron, Thunderhold, and Haghill. Six maps (three Judge, three Player) are also included: Campaign Map 1: City State of Invincible Overlord, Campaign Map 2: Barbarian Atlantis / Campaign Map 3: Valley of Ancients and Campaign Map 4: Tarantis / Campaign Map 5: Valon.