Transportation
- Transportation resources, compiled by the Archives Library Information Center (ALIC)
Aircraft
Railroads
- ICC Railroad Valuation Records, Overview of the Records
- Records Relating to Railroad Accident Reports
- Records Relating to the U.S. Military Railroads
- Report from the Commissioners of the Pacific Railroad Commission, digitized in the National Archives Catalog, National Archives Identifier 302000
- Records Relating to Railroads in the Cartographic Section of the National Archives, a reference information paper.
- Railroad Retirement Board Records at the National Archives at Atlanta
- Bridging the Mississippi: The Railroads and Steamboats Clash at the Rock Island Bridge, by David A. Pfeiffer
- Riding the Rails Up Paper Mountain: Researching Railroad Records in the National Archives, by David A. Pfeiffer
- Records Relating to North American Railroads, by David Pfeiffer, a finding aid for researching railroad records in the National Archives
- The "Fast Mail": A History of the U.S. Railway Mail Service By Fred J. Romanski
Highways
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