Relief shown by contours and spot heights. "Topography by photogrammetric methods from aerial photographs taken 1966 and planetable surveys 1968; revised from aerial photographs taken 1991; field checked 1993; map edited 1994." Includes quadrangle location map and index to adjoining quadrangle names. "42097-G2-TF-024." "DMA 6569 I SW--Series V875."
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.