Topographic map. Tazewell Folio, VA-WV (1 : 125000); Folio 44, 1897 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. The Forks, Maine 15-min Quad, 1956 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Thoroughfare Gap, VA 7.5 Quad. (1 : 24000). U.S. Geological Survey: Topographic., 1983 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Wallpack, PA-NJ 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1893 (1898), 1893 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Willsboro, NY-VT 15.0 Quad. (1 : 62500). U.S. Geological Survey: Topographic. 1895 (1911), 1895 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Windsor Locks, CT 7.5 Quad. (1 : 24000). U.S. Geological Survey: Topographic., 1964 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Yamaska, 31-1/2 (1 : 50000). Dept. Mines & Technical Survey [Quebec]: Topographic., 1980 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsCanada.
Topographic map. York, ME 15-min Quad, 1956 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsUSA.
Topographic map. Yu Nan Province (1 : 253440). Survey of India: Topographic., 1917 Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014MapsIndia.
Undated. Bookmark Collection Context Yale University -Yale Peabody Museum of Natural History Division of Invertebrate Paleontology Archives, 1861-2014Field Notebooks