Rules from my Pacificon OD&D game actually trying to make Chainmail work as the combat system and other house rules.
Skrad, a dungeon dungeon write up for a small pen and ink map
Elven Blades A dungeon scene with a repurposed magic item
Stuff from the 80s
Stuff from the 70s
Lammasu PC class very cursory, written in response to a reincarnation or polymorph
Spells of the Blue Book Low level homebrew spells.
Castle Cairnin dungeon map and write up - scanned in, not transcribed
The Catacombs of Zharn scanned map, transcribed dungeon key