History of Grand Forks County : with special reference to the first ten years of Grand Forks City, including an historical outline of the Red River Valley
NOTES. Note A. Page 2.—There is a long gentle slope, or descent of about three hundred feet from the Elk Valley to the valley plain. Eight to ten miles west from the river the surface formation beneath the topsoi! gradually changes from lacustrine and alluvial deposits to bowlder clay, thus forming...
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| Language: | unknown |
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State Historical Society of North Dakota
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| Online Access: | http://cdm16921.contentdm.oclc.org/cdm/ref/collection/ndsl-books/id/39080 |