Map. USGS 15' topographic quadrangle - Cibola, Arizona - California. Scale 1:62500 - Datum NAD27. Not annotated with localities., 1951 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Clarkdale - Arizona. Scale 1:62500 - Datum NAD27. Not annotated with localities., 1944 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Cooks, Mich. Scale 1:62500. 1958 edition. Not annotated with localities., 1958 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Corner Lake, Mich. Scale 1:62500. 1958 edition. Not annotated with localities., 1958 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Cortaro - Arizona. Scale 1:62500 - Datum NAD27. Not annotated with localities., 1957 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Diamond Butte - Arizona. Scale 1:62500 - Datum NAD27. Not annotated with localities., 1937 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Diamond Springs, Nevada. Scale 1:62500. Two copies annotated with localities including PN-4077 thru PN-4085, PN-4101-F thru PN-4104-F, PN-4106-F, PN-4150-F thru PN-4157-F., 1957 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Dixie Flats, Nevada. Scale 1:62500. Annotated with localities including PN-4006-F thru PN-4010-F, PN-4015-F thru PN-4022-F; contains additional pencil marks corresponding to an additional locality., 1952 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - East Cincinnati, Ohio - Kentucky. 1914 edition, reprinted in 1936. Scale 1:62500. Not annotated with localities., 1936 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…
Map. USGS 15' topographic quadrangle - Elgin - Arizona. Scale 1:62500 - Datum NAD27. Not annotated with localities., 1958 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Charles A. and June R. P. Ross Archives, 1953-2002…