Ran across this on the SP narrow gauge list:TOMBSTONE, the famous Old West town in southern Arizona, could lose its status as a National Historic Landmark after decades of violating historic preservation building codes. The Department of the Interior has put the so-called "town too tough to die" on its threatened list, the highest warning level. A popular tourist destination, Tombstone's historic integrity has declined into a blend of authentic history and fake Old West ambiance, federal and state officials said. Newer buildings bear false dates from the 1870s to 1880s. Storefronts are painted colors like chartreuse - not found in Tombstone 125 years ago. "The buildings have been altered in such a way that it's creating a very inauthentic appearanceto the visiting public," said Greg Kendrick, National Park Service manager for the landmark program. Tombstone, population 1,750, gets an estimated 450,000 visitors a year. METRO p.14Boston - Wednesday. July 20, 2005Metro is a free newspaper distributed at Transit Stations in many Cities.