WILLYS-OVERLAND-KNIGHT REGISTRY is an international club of owners, and enthusiasts supporting the preservation of antique automobiles utilizing sleeve-valve engines, or the related family of Willys-Overland vehicles from 1903 to 1942. The club maintains a database of all registered vehicles, hosts an online forum where owners can help each other navigate restorations, houses a library of original blueprints and dealer materials, and publishes a quarterly magazine for all members. In addition, WOKR chapter clubs exist across the U.S. and around the world. An international meet is held annually in the U.S. and is open to all members.