"Just what is a jackalope? Purported to be part jackrabbit and part antelope, the jackalope began as a local joke concocted by two young brothers in a small Wyoming town during the Great Depression. Their creation quickly spread around the U.S., where it now regularly appears as innumerable forms of kitsch--wall mounts, postcards, keychains, coffee mugs, shot glasses, and so on. A vast body of folk narratives has carried the jackalope's fame around...