| GCat | Policy and Organization |
| MCat | Education and Research |
| SCat | History |
Historical archives of transportation information. Preservation of transportation history.
50 Years of Interstate Structures: Past, Present, and Future ![[pdf]](graphics/file_pdf.gif)
[32492] 
History of culverts, bridges and other structures.
[32492] History of culverts, bridges and other structures.
Freight Railroads: A Historical Perspective [32413]
Overview of history of freight railroads including regulation impacts over time.
Overview of history of freight railroads including regulation impacts over time.
Historical Transportation Development [31850]
Overview of transportation development from the provision and interpretation of information standpoint.
[31850] Overview of transportation development from the provision and interpretation of information standpoint.
Lessons Learned from the AASHO Road Test and Performance of the Interstate Highway System [31326]
Six papers on the performance on the interstate highway system and road tests from 1956-1961 in Ottawa, Illinois.
[31326] Six papers on the performance on the interstate highway system and road tests from 1956-1961 in Ottawa, Illinois.
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Publications
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Hard work spotlights the character of people: some turn up their sleeves, some turn up their noses, and some don't turn up at all.
