Census of Transportation: 1967

Library Holdings:

1967 census of transportation
United States. Bureau of the Census.
v. 1. National travel survey -- v. 2. Truck inventory and use survey -- v. 3. Commodity transportation survey: pt. 1. Shipper groups. pt. 2. Production areas and selected states. pt. 3. Commodity groups.
find in the library and online via Hathi Trust