1. Map of the United States showing the progress of the topographic survey during the fiscal year 1891-1892 Maps University Of Illinois Urbana Champaign Public content 1891. Gannett, Henry, 1846-1914. U.S. Geological survey. Thirteenth Annual Report, pl. 1.;1 map, colored;44 x 72 cm.;1:7,000,000. U.S. Geological Survey (Washington, D.C.), [1893?].