D3: Vault of the Drow (1978)

From the web:

"This module provides a complete setting for play of the ADVANCED DUNGEONS & DRAGONS rules. Contained herein is background information, a large-scale referee's map with a matching partial map for players, referee' notes, special exploration and encounter pieces, a hex map detailing an enormous cavern area, a special temple map, encounter and map matrix keys, and additional sections pertaining to unique new creatures for use with this module and the game as a whole. This module can be played alone, as the conclusion to module D1-2 (DESCENT ITO THE DEPTHS OF THE EARTH) or a the third module in a series that forms a special extended adventure (G1-2-3 AGAINST THE GIANTS, D1-2, AND Q1 QUEEN OF THE DEMONWEB PITS).