Veterans Day, also called Remembrance Day, was originally called Armistice Day in honor of the signing of the armistice that ended World War I. Here are some related links (thanks, sonjag!) that I found interesting.
Catalog of Political Cartoons by Dr. Seuss: http://orpheus.ucsd.edu/speccoll/dspolitic/Frame.htm
Powers of Persuasion: http://www.library.northwestern.edu/govinfo/collections/wwii-posters/
Remembering Pearl Harbor: