Maps & Atlases of Washington County, Nebraska. Historic Maps & Atlases of Washington County. 1908 Plat Map - Washington County, Nebraska *UPDATED* Plat map for Washington County, Nebraska in 1908. Names are indexed and searchable. Official State Altas - Washington County, Nebraska 1885 view large image (1.12 MB) Courtesy of the David Rumsey Map Collection Official State Altas - Blair, Nebraska 1885 view large image (830 KB) Courtesy of the David Rumsey Map Collection Official State Altas - Fontanelle, Arliington, Kennard, Herman, Nebraska 1885 view large image (811 KB) Courtesy of the David Rumsey Map Collection The New Rand McNally 11 x 14 Atlas of the World - Washington County, Nebraska 1895 view large image (122 KB) Courtesy of livgenmi.com