Much can be learned through close examination of editorial cartoons, and this fine online collection created by The Ohio State University Cartoon Research Library will be a welcome find for educators and students alike. The Opper Project is named after Ohioan Frederick Burr Opper, who was one of the most well-known early American-born cartoonists. First-time visitors may wish to start out by reading the biography of Opper presented here, and then continue on by looking over the "Editorial Cartoons: An Introduction" section. Educators will want to look through the lesson plans, which use various historical editorial cartoons to illuminate topics such as the League of Nations, Reconstruction, the Great Depression, and immigration. The site is very user friendly, and visitors shouldn't miss the special worksheets that explore caricatures and common editorial symbols.