Statistics for occurrence #1 of “Upper Missouri” in year 1862, month October, day 10 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...see, issued an order requiring the enrolment of all persons between the ages of eighteen and fifty-five, announcing that thirty days would be allowed for volunteering. A fight took place on the Upper Missouri River, about a hundred and fifty miles below Fort Berthold, between a party of miners, who were descending the river in a Mackinaw boat, and a large number of the Yancton Sioux tribe of Indians. Th...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.