Romero released DoomEd sources, map sources for DOOM, Ultimate DOOM and DOOM II and textures:
More goodies from Romero (DoomEd source, maps, graphics)
Doom tools and maps sources released
Re: Doom tools and maps sources released
This has already been posted here: http://www.betaarchive.com/forum/viewtopic.php?t=34062
16 years of BA experience; I refurbish old electronics, and archive diskettes with a KryoFlux. My posting history is 16 years of educated speculation and autism.