1993res is a wad-ified collection of unused doom art, including Alpha/Beta material and the never-seen-before stuff that Romero posted on Twitter. It include textures, sprites, and graphics, including full rotations for the player and zombies (huzzah!) and a few community-edited bonuses like a full frameset for the pump-action proto-SSG (thanks Ravage!). Big thanks to Jimmy n' Minigunner for helping with the rips, too!
As a note, no texture or thing definitions are present; the wad is simply meant to be a graphic resource for other folks to use.
Hope folks find it useful!
[EDIT FROM THE FUTURE]
This project's pretty old -- check out its spiritual successor, LostRes, here: