Topographic map. Dorchester County, MD 15 Quad. (1 : 62500). U.S. Geological Survey: Topographic., 1971 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Ellenville, NY 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1906 (1936), 1906 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Frankfort West, KY 7.5 Quad. (1 : 24000). U.S. Geological Survey: Topographic., 1970 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Franklin Folio, WV-VA (1 : 125000); Folio 32, 1896 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Freeport, ME 15-min Quad, 1957 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Garza Peak, CA 7.5 min Quad Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Gaspe, Quebec, 22A (1 : 250000). Dept. Mines & Technical Survey [Quebec]: Topographic., 1959 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsCanada.
Topographic map. Gray, ME 15-min Quad, 1957 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Grondines, 31 1/9 East (1 : 50000). Dept. Mines & Technical Survey [Quebec]: Topographic., 1971 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsCanada.
Topographic map. Guadalupe Peak, TX, 7.5 Quad. (1 : 24000). U.S. Geological Survey: Topographic. Photocopy. Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.