Here's a place where you can obtain images for your projects.
from http://www.progressivehistorians.com/frontPage.do
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There are a number of sources of public domain images on the Web.
The presence of a resource on this list does not guarantee that all or any of the images in it are in the public domain. You are still responsible for checking the copyright status of images before you submit them to Wikipedia...
# http://lcweb2.loc.gov/ammem/ammemhome.html Library of Congress American Memory site (Check copyright information for the separate items before deciding to use them!)
# http://teachpol.tcnj.edu/amer_pol_hist/ - public domain images of American Political History
# http://www.exclassics.com/newgate/ngillus.htm Images from The Newgate Calendar. Mostly crimes and criminals from the 18th century. Also other works at http://www.exclassics.com
# http://fromoldbooks.org/ Collection images scanned from various old books that are now in the public domain. Searchable. Used to be at http://www.holoweb.net/~liam/pictures/oldbooks/
# http://www.john-leech-archive.org.uk/ John Leech sketch archives 1841 until 1864 from Punch magazine The page states they are long out of copyright and that they are believed to be public domain...
from http://www.progressivehistorians.com/frontPage.do