See E. L. Waldo, Dakota: An Informal Study of Territorial Days (2d ed. 1936); Federal Writers' Project, North Dakota: A Guide to the North Prairie State (1938, rev. ed. 1980); M. E. Kazeck, North Dakota (1956); E. B. Robinson, History of North Dakota (1966); L. R. Goodman and R. J. Eidem, Atlas of North Dakota (1976); F. M. Berg, Ethnic Heritage in North Dakota (1983).
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