United States. Bureau of Public Roads1 map on 2 sheets1594431file name: index.cpdbarcode: 31858052296724islandora: sheetmaps_131(OCoLC)233103660https://digital.lib.uiowa.edu/node/145041engThe BureauPublicThe Federal Aid Highway System progress map: Eastern Iowa and Western Iowa, 1927MapsIowa1920-1930University of Iowa