Wow! Just read this thread and I am definitely interested in helping out.
I concentrate on pre-code horror (most of the PCH scans on here, other than ACG and Fiction House are my scans [I release them under a different name], though I usually let others post them for me).
About a year ago, I started a project to get scans of every pre-code horror comic out there.
What I've been doing for the stuff that's not out there yet is to buy low-grade copies from e-bay, then scan them and either sell them back (almost always at a loss) or trade them to someone else in return for letting me borrow other issues from them that I scan and return to them. Most would call me crazy for doing that, but I don't have room for the actual comics and the scans do me just fine.
So I've been borrowing and scanning comics for a while now.
Once that is done, I'd like to index them all for GCD but I would probably not be able to identify much (if any) unsigned art [other than ones that others have already identified, which I collect in my database] That's something you'd probably be a lot better at.
I'll post my list of stuff I'd like to scan below. Of course, you have no reason to trust me on this but I could put you in touch with someone else I've traded with who can vouch for me. My main concern is damaging the books. All the stuff I buy (and borrow from others) is very low grade (like you, I just care about the contents and collect them to read). The main damage that occurs when I scan is that if the cover is hanging by a thread (i.e. partially hanging from one staple), it sometimes detaches when I scan. If books are really brittle, sometimes the pages will separate if I try to lay them flat on the scanner, but if that happens, I just stop scanning that issue and move on to another (it's only happened a few times out of hundreds of scans).
Let me know if you're interested and maybe we could start out with a small batch (maybe Fawcett and Farrell, since I am quite interested in those two and there aren't a lot of them).
Anyway, here is the stuff I'm interested in:
HARVEY COMICS
BLACK CAT (MYST) 30, 32, 40, 42, 45, 49,
CHAMBER/CHILLS 22, 24, 14, 16, 17, 21, 24
TOMB OF TERROR 10, 12
WITCHES TALES 5, 17, 18, 20
FAWCETT COMICS
BEWARE: TERROR 5,8
STRANGE S./ANOTHER WORLD 2,4,5
STR. SUSPENSE ST. 2, 4
THIS MAG/HAUNT 1,2
AVON COMICS
EERIE 7,9,11,12
WITCHCRAFT 2,4,6
STANDARD COMICS
ADV. INTO DARK. 5,7,8
OUT OF SHADOWS 6,8,11-13
THE UNSEEN 6, 8-10, 15
WHO IS NEXT? 5
ACE COMICS
BAFFLING MYSTER 5,6,8-12,19,20,22,23
THE BEYOND 4,5,13-15,18,20,22,25-27
CHAL. OF UNKNWN 6
HAND OF FATE 8-10,12-13,17,18,24,25a,25b
WEB OF MYSTERY 2,4,10,21,22,26
CHARLTON
STRANGE SUSPENSE 17,22
THE THING 1,3-6,8,10,11
THIS MAG/HAUNTED 15,16,19,21
FARRELL
HAUNTED THRILLS 10
MIDNIGHT 6
STRANGE FANTASY 14
STRANGE JOURNEY 3
VOODOO 2
GILLMOR
CLIMAX 2
MR. MYSTERY 8