Libro 3,968,474 Electrónico 87,251 Desconocido 64,091 Tesis 58,652 Procedimiento de la Conferencia 41,981 Revista 29,326 Seriadas 27,712 Conjunto 25,001 Documento de Gobierno 23,057 Manuscrito 12,163 Fotografía 10,170 Mapa 6,714 Audiom 5,617 Capítulo de libro 5,052 Partituras 3,051 Periódico 2,668 Material de referencia 1,446 Objeto Físico 392 Artículo 253 ver todos ...

D - Historia mundial 1,147,829 H - Ciencias sociales 320,393 L - Educación 316,933 P - Lenguaje y literatura 286,561 F - Historia general americana 251,526 B - Filosofía, psicología, religión 181,027 N - Finas artes 136,882 E - Historia de los Estados Unidos 107,013 J - Ciencias políticas 83,133 Z - Ciencias bibliotecológicas 71,658 G - Geografía, antropología, recreación 67,235 K - Leyes 57,521 T - Tecnología 45,822 C - Ciencias históricas 40,427 M - Música 38,332 R - Medicina 31,054 A - Trabajos generales 30,679 U - Ciencias militares 28,258 Q - Ciencia 25,979 S - Agricultura 18,142 V - Ciencias navales 9,117 ver todos ...

United States Congress 262,086 Great Britain Parliament. House of Commons 141,858 United States Congress. House 53,665 United States Congress. House. Committee on Invalid Pensions 25,680 United States Congress. Senate. Committee on Pensions 24,749 United States Congress. House. Committee on Claims 19,082 ebrary, Inc 15,959 United States Congress. Senate. Committee on Claims 15,388 United States Congress. House. Committee on the Judiciary 14,995 De Gruyter 13,929 United States Congress. Senate. Committee on the Judiciary 13,534 Culture Class Collection (University of Pennsylvania) 10,779 United States Congress. House. Committee on Military Affairs 10,532 United States Congress. House. Committee on Appropriations 9,790 United States Congress. House. Committee on War Claims 8,468 United States Congress. Senate. Committee on Military Affairs 8,051 England and Wales Parliament 7,659 ProQuest (Firm) 7,185 Films for the Humanities & Sciences (Firm) 6,894 Anne S.K. Brown Military Collection 6,774 Films Media Group 6,652 United States War Department 6,598 United States Congress. Senate. Committee on Commerce 6,154 United States Department of the Treasury 6,102 United States Congress. House. Committee on Public Lands 5,590 United States Congress. House. Committee on Interstate and Foreign Commerce 5,402 Adam Matthew Digital (Firm) 5,309 England and Wales Sovereign (1625-1649 : Charles I) 5,086 Horace Howard Furness Memorial Library (University of Pennsylvania) 4,984 Gotham Book Mart Collection (University of Pennsylvania) 4,933 ver todos ...

English 1,912,729 French 372,280 German 331,236 Spanish 284,691 Chinese 268,841 Russian 185,702 Italian 184,348 Japanese 137,559 Arabic 81,243 Portuguese 62,706 Polish 60,934 Korean 52,188 Latin 41,721 Turkish 41,414 Dutch 34,562 Hebrew 33,914 Ukrainian 25,453 Greek 24,903 Persian 23,987 Czech 20,020 Hungarian 16,143 Swedish 14,958 Vietnamese 12,617 Romanian 11,719 Bulgarian 11,025 Catalan 10,191 Indonesian 9,976 Danish 9,697 No linguistic content 9,237 Croatian 8,805 ver todos ...

History 1,916,987 Sources 380,364 Biography 285,791 Biographies 163,641 Electronic books 112,158 Private bills 111,974 Legislative bills 111,957 Early works to 1800 93,537 Fiction 84,457 Congresses 81,538 Criticism, interpretation, etc 78,581 Pictorial works 70,393 Conference papers and proceedings 56,494 Bibliography 46,464 Periodicals 46,145 Exhibitions 45,042 Catalogs 40,380 Early works 39,813 Personal narratives 38,839 Church history 35,506 Exhibition catalogs 29,940 Broadsides 21,532 Bibliographies 21,117 Military history 21,065 Drama 20,496 Dictionaries 20,172 Anecdotes 19,902 Poetry 18,850 Correspondence 17,701 Interviews 16,673 ver todos ...

20th century 566,430 19th century 275,313 1900-1999 199,548 18th century 98,212 21st century 78,718 Civil War, 1861-1865 70,935 17th century 70,631 1900 - 1999 66,186 1800-1899 61,932 Revolution, 1789-1799 46,928 16th century 40,853 Revolution, 1775-1783 39,942 20e siècle 35,908 To 1500 33,425 Civil War, 1642-1649 30,674 Early works to 1800 27,607 1700-1799 26,135 Revolution, 1917-1921 25,972 1939-1945 25,251 1800-1999 24,078 1945- 23,820 Colonial period, ca. 1600-1775 22,713 1800 - 1899 22,106 2000-2099 21,138 1861-1865 16,993 Civil War, 1936-1939 16,784 1933-1945 16,521 1789-1799 15,814 1600-1699 15,400 19e siècle 13,875 ver todos ...