Badgerlink databases: Access badgerlink.net through your school or local library. Click on the appropriate grade level (elementary, middle or high). Click on the Social Studies box and search "The Great Depression" in the databases provided.
Wikipedia: http://simple.wikipedia.org/wiki/Great_Depression
Digital Public Library of America: http://dp.la/exhibitions/exhibits/show/new-deal
National Heritage Museum: http://www.nationalheritagemuseum.org/Exhibitions/CurrentExhibitions/TeenageHoboesintheGreatDepression.aspx
Library of Congress: http://www.loc.gov/teachers/classroommaterials/themes/great-depression/exhibitions.html