1920. Geological Survey (U.S.). Relief shown by contours and spot heights. 67 x 71 centimeters Scale 1:125,000 General Map Collection. The Survey (Washington).
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1990. Condra, G. E. Conservation and Survey Division.
1897. Geological Survey (U.S.). Shows buildings, roads and railroads.; Relief shown by contours and spot heights.; "Surveyed in 1895."; Includes legend. 43 x 62 centimeters Scale ... U.S. Geological Survey (Washington, D.C).
1875. Lehman, Ambrose E. (Ambrose Edwin), 1851-1917. Title from maps.; "Under the superintendence until 1877 of Dr. Persifor Frazer."; "J. P. Lesley, state geologist."; Assistant topographers: George ... Geological Survey of Pennsylvania (Harrisburg, Pa).
1904. Huebinger, M. (Melchior). Iowa Publishing Co.
1904. Huebinger, M. (Melchior). Iowa Publishing Co.
1904. Huebinger, M. (Melchior). Iowa Publishing Co.
1904. Huebinger, M. (Melchior). Iowa Publishing Co.
1904. Huebinger, M. (Melchior). Iowa Publishing Co.
1904. Huebinger, M. (Melchior). Iowa Publishing Co.