ID Irwin 1947 30 min
Idaho-Wyoming, Irwin quadrangle
Morrison, Lee.Evans, S. S.
Geological Survey (U.S.)
U.S. Geological Survey
45 x 33 cm.
1 map : col.
The topographic maps of the United States" and key to standard symbols on verso.
Relief shown by contours and spot heights.
Surveyed in 1930-1932.
1927 North American datum.
W 111⁰30ʹ--W 111⁰00ʹ/N 43⁰30ʹ--N 43⁰00ʹ
Wyoming -- Maps.Idaho -- Maps.
Special Collections Digitized Maps
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