The United States Democratic Review - Monthly journal of opinion, and its predecessors, from 1837 to 1859. Searchable page images, and scanned text of entire volumes. - http://moa.cit.cornell.edu/moa/browse.journals/usde.html
Grolier Multimedia Encyclopedia: Democratic Party - Article on this major United States political party and its history, for teens. Has pictures of some famous Democrats, and a bibliography. - http://ap.grolier.com/article?assetid=0082980-0&templatename=/article/article.html
Encyclopedia Americana: Democratic Party - History of the party from inception to the present. - http://ap.grolier.com/article?assetid=0123810-00&templatename=/article/article.html