Book: Calendar Clocks by Tran Duy Ly (Arlington Books Company, 1993). Picture eccyclopedia with an update price guide. Museum: The American Clock & Watch Museum, 100 Maple Street, Bristol. CT 06010 (860-583-6070). Web site: members.rurlnet.org/calender.htm. Oranization: national Association of Watch & Clock Collectors, 514 Poplar Street, Columbia, PA 17512.