Author
Making of the Modern World
873
Sabin Americana, 1500-1926
513
United States. Congress. House. Committee on Interstate and Foreign Commerce
472
Rupp Collection (Athenaeum of Philadelphia)
334
United States. Congress. Senate. Committee on Interstate Commerce
263
United States. Interstate Commerce Commission
258
United States. Federal Railroad Administration. Office of Research and Development
249
United States. General Accounting Office
226
United States. Congress. Senate. Committee on Commerce, Science, and Transportation
208
United States. Federal Railroad Administration
178
United States. Congress. House. Committee on Public Lands
172
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Railroads, Pipelines, and Hazardous Materials
171
United States. Congress. House
166
Association of American Railroads. Railroad Committee for the Study of Transportation
160
Pennsylvania Railroad
156
United States. Federal Highway Administration
154
United States. Congress. House. Committee on Transportation and Infrastructure
151
Pennsylvania. Department of Transportation
144
United States. National Transportation Safety Board
128
Baltimore and Ohio Railroad Company
126
United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Commerce
123
United States. Congress. House. Committee on the District of Columbia
122
United States. Railroad Retirement Board
122
United States
113
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Railroads
111
United States. Congress. Senate. Committee on Commerce. Subcommittee on Surface Transportation
111
Rand McNally and Company
110
United States. Congress. Senate. Committee on Commerce
108
United States. Congress. Senate. Committee on Public Lands
105
United States. Government Accountability Office
100
Great Britain
99
United States. Congress. Senate
98
United States. Congress. House. Committee on Commerce
95
United States. Congress. House. Committee on the Pacific Railroad
95
United States. Bureau of Public Roads
89
United States. Works Progress Administration
89
West Virginia. State Road Commission
89
National Research Council (U.S.). Transportation Research Board
87
United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Surface Transportation
87
GPO MARCIVE
86
United States. Interstate Commerce Commission. Bureau of Transport Economics and Statistics
83
United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Surface Transportation and Merchant Marine
79
United States. Department of Transportation
79
Datamonitor (Firm)
77
United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics
75
United States. Congress. Senate. Committee on Labor and Public Welfare
74
United States. Congress. Senate. Committee on the District of Columbia
72
United States. Congress. House. Committee on Indian Affairs
71
United States. Congress. House. Committee on the Judiciary
71
United States. Congress. Senate. Committee on the Judiciary
70
more ...