Images of American Political History

This is a good source for digital images of American political history. "About this site" information is scanty, but it appears to be the work of Dr. William J. Ball of the Dept. of Political Science at the College of New Jersey. The search feature doesn't seem to be working, but you can find lots of images by browsing by era or by special topic. The noble intent of the site is "to support the teaching of American political history by providing quick access to uncopyrighted images for inclusion in teaching materials. All images are strongly believed to be in the public domain. They were obtained from non-copyrighted U.S. government holdings and publications and from published works with clearly expired copyrights. Thus there are absolutely no restrictions on their use."