Well here's the entire texture wad for Quake2.  To compile it, I used
Q2toWad.exe that I got off CDROM.com's FTP site.

This wad file holds 1324 textures, while e1u1 holds 329 textures, so as
far as I can tell it's all the textures.

Also notice the "interesting" secret textures Q2toWad.exe extracted.
Look for-

doom
dopfish
ourpic1_1
ourpic2_1
ourpic2_2
ourpic3_1
ourpic3_2
ourpic4_1
ourpic4_2
ourpic5_1
ourpic5_2
ourpic6_1
ourpic6_2
ourpic7_1
redcar_2

Also there are some new special textures
Such as-

clip
clip_mon
hint
origin
skip
trigger

I know clip and trigger from Quake, but all the others I have
somewhat of an idea of what they do, but if anyone can clarify,
it'd be great!  And if you find any kinds of problems with the
wad file, please tell me.  I hate f'ed up files the same as the
next person.

If you have any questions email me at baobhan@hotmail.com