Book 3,351,771 Government Document 171,186 Serial 87,024 Conference Proceeding 85,981 Journal 68,499 Thesis 37,871 Unknown 34,256 Map 25,340 Audio 22,495 Musical Score 17,118 Electronic 14,056 Book Chapter 6,975 Newspaper 5,176 Kit 3,131 Manuscript 1,682 Photo 929 Reference Material 181 Physical Object 162 Article 70 see all ...

P - Language and Literature 624,920 H - Social Science 412,569 B - Philosophy, Psychology, Religion 321,369 D - World History 274,105 Q - Science 230,421 N - Fine Arts 178,701 F - General American History 141,618 T - Technology 128,265 R - Medicine 125,986 J - Political Science 93,676 G - Geography, Anthropology, Recreation 90,952 E - United States History 87,934 M - Music 82,625 Z - Library Science 82,232 K - Law 75,545 L - Education 70,013 A - General Works 54,148 C - Historical Sciences 48,736 S - Agriculture 48,322 U - Military Science 31,224 V - Naval Science 7,014 see all ...

Gotham Book Mart Collection (University of Pennsylvania) 28,397 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1951-1975 10,774 Horace Howard Furness Memorial Library (University of Pennsylvania) 10,449 Geological Survey (U.S.) 9,206 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1976-2000 8,708 United States National Aeronautics and Space Administration 7,617 Culture Class Collection (University of Pennsylvania) 6,714 St. Martin's Press/Tor Archive (Brown University) 6,326 United States Bureau of the Census 5,896 Harris Collection of American Poetry and Plays (Brown University) Poetry, 2001-2025 5,567 Alumni and Friends Memorial Book Fund 5,128 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1926-1950 5,084 United States 5,012 Shakespeare, William, 1564-1616 4,860 American Imprints Collection (Athenaeum of Philadelphia) 4,604 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1901-1925 4,449 Rosengarten Family Fund 4,397 Anne S.K. Brown Military Collection 4,385 Datamonitor (Firm) 4,250 George Clapp Vaillant Book Fund 4,182 American Culture Class Collection (University of Pennsylvania) 4,129 Walter L. Pforzheimer Intelligence Collection (Beinecke Rare Book and Manuscript Library) 4,049 Harris Collection of American Poetry and Plays (Brown University) Collections and Anthologies 3,806 Sallie Bingham Center for Women's History and Culture 3,713 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1609-1875 3,667 United States Department of State 3,666 Langley Research Center 3,535 Metcalf Collection (Brown University) 3,247 Anne and Joseph Trachtman Memorial Book Fund 3,150 Yarnall Collection (University of Pennsylvania) 3,117 see all ...

History 348,837 Biography 151,910 Fiction 150,086 Congresses 124,786 Criticism, interpretation, etc 124,365 Biographies 119,721 Periodicals 117,121 Conference papers and proceedings 101,644 Electronic books 66,606 Exhibitions 63,324 Poetry 57,522 Bibliography 53,573 Exhibition catalogs 46,364 Catalogs 45,317 Early works to 1800 41,386 Drama 39,568 Statistics 35,263 Pictorial works 33,431 Maps 30,463 Bibliographies 29,143 Early works 28,194 Sources 26,174 Autobiographies 25,285 Dictionaries 25,069 Sermons 23,016 Case studies 21,469 Translations into English 20,140 Handbooks, manuals, etc 20,091 Novels 19,291 Translations 18,174 see all ...

20th century 171,622 1900-1999 94,874 19th century 73,203 1900 - 1999 46,883 21st century 43,707 1800-1899 30,575 18th century 29,170 17th century 24,798 2000-2099 23,504 1945- 18,904 1939-1945 18,697 20e siècle 17,978 1800 - 1899 15,077 Civil War, 1861-1865 14,003 1700-1799 10,982 16th century 10,899 Since 1945 9,936 1564-1616 9,415 Revolution, 1775-1783 9,407 21e siècle 9,155 To 1500 9,012 1914-1918 8,874 1800-1999 8,546 Early works to 1800 8,308 1939 - 1945 8,020 1861-1865 7,216 1600 - 1699 6,721 19e siècle 6,689 1600-1699 6,352 2000 - 2099 6,011 see all ...

United States 422,852 Great Britain 141,151 England 85,171 India 57,610 Europe 48,042 Canada 40,293 New York (State) 39,198 China 39,177 France 36,195 États-Unis 30,009 Germany 29,315 California 26,174 Italy 25,817 New York 24,736 South Africa 23,931 Japan 23,556 Ireland 23,411 Massachusetts 23,171 Australia 21,976 Africa 21,177 Soviet Union 19,884 London 19,482 Pennsylvania 15,980 Philippines 14,678 Middle East 14,635 Nigeria 14,253 Scotland 14,062 Mexico 13,403 Asia 13,342 Greece 13,223 see all ...