Book 98,652 Government Document 9,551 Serial 8,557 Conference Proceeding 3,681 Journal 2,802 Electronic 1,584 Thesis 1,579 Unknown 697 Kit 92 Book Chapter 81 Manuscript 48 Reference Material 38 Audio 34 Map 32 Newspaper 25 Photo 21 Physical Object 3 Article 1 see all ...

H - Social Science 111,209 C - Historical Sciences 1

United States General Accounting Office 979 United States Federal Highway Administration 971 Organisation for Economic Co-operation and Development 913 National Research Council (U.S.) Transportation Research Board 694 United States Interstate Commerce Commission 635 United States Department of Transportation 630 United States Bureau of Public Roads 495 European Conference of Ministers of Transport 494 United States Urban Mass Transportation Administration 477 United States Board of Engineers for Rivers and Harbors 476 ebrary, Inc 471 Round Table on Transport Economics Paris, France 443 United States 425 United States Congress. House. Committee on Interstate and Foreign Commerce 422 United States Post Office Department 411 United States Congress. House. Committee on Merchant Marine and Fisheries 399 United States Federal Transit Administration 388 Rupp Collection (Athenaeum of Philadelphia) 361 United States National Highway Traffic Safety Administration 360 United States Congress. Senate. Committee on Interstate Commerce 338 United States Bureau of the Census 316 United States Congress. Senate. Committee on Interstate and Foreign Commerce 311 United States Army. Corps of Engineers 308 European Conference of Ministers of Transport Economic Research Centre 302 Transit Cooperative Research Program 282 Transit Development Corporation 260 United States Maritime Administration 253 United States Congress. House. Committee on Post Office and Civil Service 216 Association of American Railroads Railroad Committee for the Study of Transportation 211 United States National Transportation Safety Board 207 see all ...

English 78,541 French 6,343 German 5,652 Chinese 4,449 Spanish 4,215 Japanese 3,086 Italian 2,097 Russian 1,812 Portuguese 1,254 Indonesian 937 Korean 930 Dutch 685 Arabic 616 Polish 447 Turkish 420 Swedish 285 Hebrew 261 Greek 232 Vietnamese 228 Thai 196 Danish 188 Norwegian 177 Finnish 143 Multiple 131 Czech 123 Afrikaans 103 Hindi 92 Croatian 90 Hungarian 90 Persian 86 see all ...

History 13,491 Periodicals 7,910 Statistics 4,349 Congresses 4,132 Electronic books 3,735 Conference papers and proceedings 3,010 Pictorial works 1,373 Biography 1,127 Directories 1,021 Catalogs 911 Case studies 817 Biographies 677 Academic theses 592 Sources 585 Technical reports 566 Handbooks, manuals, etc 489 Thèses et écrits académiques 474 Printed ephemera 435 Legislative hearings 416 Dictionaries 374 Bibliography 335 Handbooks and manuals 303 Exhibitions 284 Maps 238 Telephone directories 234 dissertations 230 doctoral dissertations 224 masters theses 224 theses 224 Academic Dissertation 221 see all ...

20th century 2,350 19th century 1,347 1900-1999 980 1800-1899 432 21st century 419 1900 - 1999 274 17th century 231 18th century 209 1800-1999 181 To 1500 174 20e siècle 171 1800 - 1899 166 2000-2099 145 Geschichte 137 1939-1945 135 Early works to 1800 98 1945- 97 19e siècle 80 20e siècle 67 1800 - 1999 63 1900-2099 58 16th century 55 James I, 1603-1625 51 1914-1918 49 1700-1799 47 Ming dynasty, 1368-1644 40 1603-1625 39 1939 - 1945 39 1700-1899 38 21e siècle 38 see all ...

United States 23,836 China 4,465 Great Britain 3,714 Germany 2,598 Japan 2,579 Europe 2,439 France 2,336 Canada 1,878 New York (State) 1,777 Italy 1,649 California 1,648 India 1,640 England 1,344 Massachusetts 1,140 Indonesia 1,089 Pennsylvania 1,028 Brazil 942 Soviet Union 881 Mexico 845 New York 791 Spain 734 Illinois 719 Korea (South) 684 Russia (Federation) 651 Argentina 650 Netherlands 590 Australia 584 Germany (West) 544 Asia 524 Turkey 502 see all ...