The world's most comprehensive catalog of library holdings, containing over 2 billion records from over 10,000 libraries. Search WorldCat to find and request materials not available at Northwestern University.
Produced and maintained by the Transportation Research Board, TRID is the world's largest and most comprehensive bibliographic resource on transportation research information, covering all modes of transportation.
National data on the travel behavior of the American public. Allows for analysis of daily travel by all modes, characteristics of the people traveling, their household, and their vehicles. The 2009 NHTS
updates information gathered in the 2001 NHTS and in prior Nationwide Personal Transportation Surveys. Subjects: behavior, commuting, persons and personal characteristics, transportation modes.
The Statistical Abstract of the United States, published since 1878, is the authoritative and comprehensive summary of statistics on the social, political, and economic organization of the United States.