Tennessee Code Title 4. State Government § 4-1-311

(1) The Tennessee Valley Railroad Museum, located in Hamilton County, which shall be indicated by an appropriate marker erected by the state. The signs shall be placed on the property of the museum and shall not exceed five hundred dollars ($500) in cost; and

(2) The Cowan Railroad Museum, located in Franklin County, which shall be indicated by an appropriate marker erected by the state. The museum may also receive appropriations as the general assembly deems necessary, grants from state or federal agencies, and donations from private or public sources.