Book 68,434 Government Document 9,494 Serial 6,849 Conference Proceeding 2,895 Journal 2,185 Electronic 1,267 Thesis 814 Unknown 627 Kit 85 Book Chapter 76 Manuscript 38 Reference Material 38 Audio 27 Map 23 Newspaper 21 Photo 12 Physical Object 2 see all ...

H - Social Science 78,540 C - Historical Sciences 1

United States General Accounting Office 979 United States Federal Highway Administration 971 National Research Council (U.S.) Transportation Research Board 694 United States Interstate Commerce Commission 633 United States Department of Transportation 629 Organisation for Economic Co-operation and Development 519 United States Bureau of Public Roads 495 United States Urban Mass Transportation Administration 477 United States Board of Engineers for Rivers and Harbors 476 ebrary, Inc 444 United States Congress. House. Committee on Interstate and Foreign Commerce 422 United States 417 United States Post Office Department 409 United States Congress. House. Committee on Merchant Marine and Fisheries 399 United States Federal Transit Administration 387 European Conference of Ministers of Transport 363 Rupp Collection (Athenaeum of Philadelphia) 361 United States National Highway Traffic Safety Administration 358 United States Congress. Senate. Committee on Interstate Commerce 338 United States Bureau of the Census 315 United States Congress. Senate. Committee on Interstate and Foreign Commerce 311 United States Army. Corps of Engineers 306 European Conference of Ministers of Transport Economic Research Centre 300 Transit Cooperative Research Program 282 Round Table on Transport Economics Paris, France 275 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 ...

History 6,196 Periodicals 6,185 Statistics 3,432 Electronic books 3,125 Congresses 3,103 Conference papers and proceedings 2,494 Directories 815 Case studies 694 Pictorial works 691 Technical reports 565 Biography 559 Catalogs 493 Printed ephemera 429 Handbooks, manuals, etc 424 Legislative hearings 415 Biographies 396 Bibliography 281 Dictionaries 263 Handbooks and manuals 262 Government publications 207 Academic theses 206 Maps 182 Early works to 1800 181 Timetables 164 Bibliographies 161 Broadsides 157 Guidebooks 156 Sources 155 Telephone directories 131 Annual reports 130 see all ...

20th century 848 19th century 663 1900-1999 383 1800-1899 252 17th century 172 1900 - 1999 148 21st century 123 1800 - 1899 119 Early works to 1800 85 1939-1945 84 18th century 77 20e siècle 65 2000-2099 59 1800-1999 58 To 1500 53 James I, 1603-1625 51 1945- 50 20e siècle 47 1603-1625 39 Geschichte 38 19e siècle 32 Charles I, 1625-1649 32 1914-1918 31 1838-1916 28 1939 - 1945 28 Civil War, 1861-1865 28 Early works to 1850 26 1795-1879 25 16th century 23 1800 - 1999 23 see all ...

United States 23,515 Great Britain 3,600 Canada 1,808 New York (State) 1,757 Europe 1,675 California 1,646 India 1,510 England 1,321 Massachusetts 1,137 Pennsylvania 1,026 New York 780 China 768 Illinois 713 Australia 578 New Jersey 473 Ohio 408 South Africa 405 Developing countries 388 London 386 Boston 381 Maryland 380 Asia 369 Japan 360 Virginia 339 European Union countries 337 North Carolina 335 Texas 334 Chicago 330 États-Unis 304 Michigan 281 see all ...