The Forsaken Elves (1996)

From the publisher:

"Moss-covered ruins remain where the ancient asylum once stood, hiding a doorway to a bizarre labyrinth. Sorcerous inmates carved its passages, filling it with inexplicable treasures and traps befitting the humor of insane wizards. But its first level isn't populated by monsters at all, but by accursed elves at odds with the deadly Coven. now demented and cruel, the pale elves shun the light of day and dare adventurers to usurp their realms.

Each Pulp Dungeons adventure has several evening's worth of action-packed, dungeon-crawling adventure, just the way it used to be! Every Pulp Dungeon in a series is linked by clues and passages to the other three! For any fantasy role-playing system!"

Credited only to Destination Games.