United States. Public Roads Administration.1 map in 8 sections3670263file name: index.cpdbarcode: 31858052296641islandora: sheetmaps_164(OCoLC)07155616https://digital.lib.uiowa.edu/node/34669engThe AdministrationPublicIowa transportation map: Highways, railroads, canals, air lanes, and dredged channels, 1941MapsIowa1940-1950University of Iowa