Bureau of Transportation Statistics
National Transportation Statistics
1978-80..........Govt Docs TD10.9:
- 1981-90, 1992-latest..........Govt Docs Microfiche TD10.9:
1998-latest
Transport Statistics in the United States
1988-1990...........Govt Docs IC1.25:
- 1992-latest..........Govt Docs Microfiche IC1.25: