Topographic map. Cambridge Springs, PA 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1925 (1944), 1925 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411921-1930.
Topographic map. Canaseraga, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1916 (1939), 1916 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411911-1920.
Topographic map. Cattaragus, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic., 1923 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411921-1930.
Topographic map. Chautauqua, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1904 (1947), 1904 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411895-1910.
Topographic map. Cherry Creek, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic., 1938 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411931-1940.
Topographic map. Cleveland, OH 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1903 (1950), 1903 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411895-1910.
Topographic map. Clymer, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1905 (1942), 1905 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411895-1910.
Topographic map. Corning, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1914 (1950), 1914 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411911-1920.
Topographic map. Corry, PA-NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1932 (1944), 1932 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411931-1940.
Topographic map. Coudersport, PA-NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1938 (1948), 1938 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Hugo R. Greiner Archives, 1885-1941Maps, 1895-19411931-1940.