Politprop Originally from the Minneapolis College of Art and Design. An awesome site.
http://www.mcad.edu/classrooms/POLITPROP/politprop.html

Propaganda Analysis
Excellent information. Of special interest may be Word games-

Propaganda and Psychological Warfare
Lafayette College. Lots of links including some found on this page.

Powers of Persuasion: Poster Art from WWII
National Archives and Records Administration. Illustrates the use and effectiveness of images and slogans.

Yahoo Propaganda Links
A collection of links showing the power of images and words.