Clip Art

 581 images from "Bilder ur Nordens Flora" (1901-1905)

 AIGA - International Symbol signs

 Antique Web Graphics from The Olden Times

 Clipart ETC: educational clip art

 Fifties Clipart, Rewind the 50's Clip Art Image Directory

 Mandarin Design's free gallery of groovy squares

 NASA Dryden Research Aircraft Image Collection

 Public domain images from the 1911 Webster's Dictionary

 Shannanigans: clipart for your amusement

 Squaresville Clipart