If you can't get enough of archives or large collections of original art you should check out the two blogs Bob Cowan have.
One of them deals with his collection of original comic art.
Cowan Collection: Comic Art
Several really good pieces has been posted so far.
Just take a look at these small pics of rare Flash, Buck and Tarzan artwork! (Full versions can be found on Cowans blog.)
And then we have his impressive collection och original animation art. Again, these are just thumbnails presented here. You will find these and a huge amount of other wonderful artwork at Cowan Collection: Animation
If you havn't checked out his blogs already you should!
And while I'm at it:
If you like newspaper comics from the 50's you should visit
Ger Apeldoorn's blog.
Many nice samples and texts about them.
Now you got enough blog recommendations to keep you away from the rest of the world for at least an hour or two. :)
PS. I just remembered that I have photos from another archive taken in 2004. I'll try to post them soon.
And I also have Chuck Thorndike's book "The business of cartooning" from 1939 on loan right now. Will post some of the more interesting cartoonist biographies from that one in a not too distant future.