The topographic maps of the United States" and key to standard symbols on verso., Relief shown by contours and spot heights., Shows small strip of Wyoming., Surveyed in 1891-92., Surveyed by reconnaissance methods., N4500-W10700/30.
"Description of the topographic map of the United States" and key to standard symbols on verso., Relief shown by contours and spot heights., Topographic sheet., Surveyed in 1891-92., Shows small strip of Wyoming.
