http://www.princetonol.com/groups/iad/links/clipart.html
http://www.art-e-zine.co.uk/vintageresources.html
http://public-domain.zorger.com/
http://www.art-e-zine.co.uk/vintageresources.html
http://karenswhimsy.com/public-domain-images/
http://commons.wikimedia.org/wiki/Main_Page
http://www.public-domain-image.com/
http://www.publicdomainpictures.net/