Doom/Doom2 concept art

Has there been any official releases of concept art and such for Doom/Doom2? I'm not talking about just the clay models, but concept sketches and drawings?

I don't think there's any outside of this shot of a Baron of Hell sketch.

Id Museum has images of the Baron of Hell and the Cyberdemon sketches. And of course there's the little Spiderdemon sketch pic featured right here at DW. AFAIK, these are all scans of the "Book of id" that came with the id Anthology.

That spiderdemon "sketch" is a photo of the Spiderdemon silicon and metal model.