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You searched for: Author Winchell, Newton Horace Remove constraint Author: Winchell, Newton Horace Subject Geological maps Remove constraint Subject: Geological maps Institution Minnesota Remove constraint Institution: Minnesota Data type Image Remove constraint Data type: Image
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1. Geological map of Hennepin County, Minn

1876. Winchell, Newton Horace. Scale not given. Photocopy. "1876." 58 x 49 cm.

2. Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota

1887. Winchell, Newton Horace and Geological and Natural History Survey of Minnesota. Scale approximately 1:330,000 (W 92°41ʹ--W 89°30ʹ/N 48°14ʹ--N 47°43ʹ). Relief shown by hachures. Cover title: Winchell's Geological map of the iron...