00921cam a2200241 4500 457651110 TxAuBib 821215s1983||||||||||||||||||||||||eng|u 81048076 //r91 9780870444159 0870444158 9780870444203 lib. bdg. 0870444204 lib. bdg. DLC DLC OCL HSA TxAuBib Preserving America's past / prepared by the Special Publications Division, National Geographic Society, Washington, D.C. Washington, D.C. : The Society, 1983. 199 p. : col. ill. ; 26 cm. Includes index. Bibliography: p. 199. Historic sites United States Conservation and restoration. United States History, Local. National Geographic Society (U.S.), Special Publications Division.