The National Register of Historic Places, 1976. - Washington, National Park Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976] - 2 vols. : illus.; 21 x 27 cm. Prepared in the Office of Archeology and Historic Preservation. Subjects--Topical Terms: Historic buildings--Directories.--United States LC Class. No.: E159 / .N38 1976 Dewey Class. No.: 973/.025