Although best known as one of the greatest syndicated cartoonists of the twentieth century, Dennis the Menace creator Henry Hank Ketcham also spent nearly a decade as a gag cartoonist for major New York magazines like Colliers and the Saturday Evening Post. In these gag cartoons, which were primarily published between 1942 and 1950, one can already see the endearing troublemaker that would become the protagonist in his long-running strip. (In fact,...