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- Grinnell College. Special Collections and Archives (x)
- 1915 (x)
- Springs (x)
- Historic Iowa Postcards (x)
- 1931 (x)
- Search results
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Title
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Dunnings Spring, Decorah, Iowa, Dunning's Spring
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Description
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Dunning's Spring (named after E.C. Dunning who originally owned the property in 1861) water originates near the base of the Galena Aquifer. The much less permeable Decorah Shale - the confining bed “floor” for the aquifer - is near the land surface, forcing the water to discharge from the wall of the Upper Iowa River Valley. The result is the picturesque falls. The groundwater issuing from the spring is flowing through an open, cavernous conduit, formed by the solutional enlargement of fractures. 1939 postmark. Number 5A143.
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Date Created
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1939
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PID
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grinnell:16179
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Title
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Mason House and mineral springs, Colfax, Iowa, Mason Hotel
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Description
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The Mason House was built in 1881 by William Mason Croft, mayor of Colfax, and was located closest to the train depot. In the process of drilling for coal in 1875, a well containing high mineral content was discovered near Colfax. The city flourished with this new discovery, and over the next four decades, thousands of people visited the town to partake in the healing powers of the fourteen mineral springs there. 1909 postmark. Number 157064.
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Date Created
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1909
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PID
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grinnell:14426