I came across these Original Dungeons & Dragons reference sheets
a few years ago. I don’t remember where they came from, and the PDF
properties don’t list an author (if anyone knows who put them
together, let me know so I can give proper credit). I keep them at my
side while I’m running my Nolenor OD&D sessions, and I find them
extremely useful. They have just what you need for a 3LBB game on
three landscape pages, including common rolls, missile weapon ranges
(taken from Chainmail), monster reaction, and the usual attack tables,
turn undead and wandering charts. All with some great, classic pieces
of art. Click on the image to download. Discussion here.