Book 904 Government Document 133 Serial 35 Book Chapter 14 Electronic 13 Conference Proceeding 8 Journal 8 Thesis 5 Reference Material 2 Unknown 1 see all ...

Z - Library Science 374 Q - Science 140 E - United States History 60 H - Social Science 35 F - General American History 30 G - Geography, Anthropology, Recreation 26 S - Agriculture 23 P - Language and Literature 22 B - Philosophy, Psychology, Religion 13 D - World History 12 J - Political Science 9 M - Music 9 C - Historical Sciences 6 N - Fine Arts 5 A - General Works 4 K - Law 4 R - Medicine 4 L - Education 2 T - Technology 2 see all ...

Geological Survey (U.S.) 70 Nickles, John M (John Milton), 1859-1945 42 University Microfilms International 18 Smithsonian Institution Bureau of American Ethnology 14 Weeks, Fred Boughton, 1864-1942 14 American Geological Institute 12 United States Indian Arts and Crafts Board 12 Darton, Nelson Horatio, 1865-1948 10 King, Ruth Reece 10 Geoscience Information Society Guidebooks Committee 8 Laurenti, Joseph L 8 Murdock, George Peter, 1897-1985 8 State Historical Society of Wisconsin 8 Thom, Emma Mertina, 1883- 8 Thwaites, Reuben Gold, 1853-1913 8 Weeks, Fred Boughton, 1864- 8 Cameron, William James 7 Farlow, W. G (William Gilson), 1844-1919 7 Geoscience Information Society Guidebook and Ephemeral Materials Committee 7 Hay, Oliver Perry, 1846-1930 7 Howe, Robert, 1946- 7 Smithsonian Institution 7 U.S. Fish and Wildlife Service 7 WHSTC Project 7 Weeks, Fred Boughton, b. 1864 7 Bogan, Arthur E 6 Coues, Elliott, 1842-1899 6 Gabel, Gernot U 6 Leng, Charles W (Charles William), 1859-1941 6 Library of Congress 6 see all ...

English 901 French 30 Spanish 24 German 16 Italian 5 Japanese 5 Arabic 4 Chinese 4 Multiple 4 Portuguese 4 Russian 4 Ukrainian 4 Latin 3 Polish 2 Icelandic 1 Norwegian 1 see all ...

Colonial period, ca. 1600-1775 19 18th century 14 To 1810 11 19th century 10 Revolution, 1775-1783 10 To 1763 (New France) 8 17th century 7 To 1783 7 1700-1799 6 1785-1851 6 20th century 6 Early works to 1800 6 Paleozoic 6 To 1763 6 Classical period, 1500-1700 5 To 1803 5 1646-1716 4 1777-1834 4 1800-1899 4 Carboniferous 4 Devonian 4 Geschichte 1600-1775 4 1510-1571? 3 1775-1783 3 1800 - 1899 3 1822-1895 3 From 230 to 570 million years ago 3 From 280 to 345 million years ago 3 Huguenot colony, 1562-1565 3 Neogene 3 see all ...