The Wizard's Tomb
from The Character Archaic, published by Wee Warriors, 1975
The Archaic was primarily a set of character sheets for D&D, the first ever set produced. However, it also contained a sample dungeon - a single, un-keyed page titled The Wizard's Tomb. It included at least 24 numbered rooms.
The partial image to the right shows a few interesting features, including doors indicated by circles and a number of oddly-shaped and angled passages.
Partial view of the Wizard's Tomb map, image from RPG Geek