The first virtual museum of architecture solely on the Internet.
New items appear weekly.
Check out the Lilly Library's great collection of Clip art books . Most of these are from the 1970s and 80s, before computer art became popular. Images you'll never find elsewhere, taken from graphic manuals, 19th-century newspapers, etc., etc. Incredibly, ten volumes of clip art arranged by subject and printed on high gloss paper to make really good copies. Nice for photocopying, T-shirts etc.