Statistics for occurrence #1 of “Fort Benton” in entry meagher-thomas-francis of Harper's Encyclopedia of United States History:

... the command of the district of Etowah. In 1865 he was appointed secretary, and in 1866 became acting governor of Montana. While engaged in operations against hostile Indians, he was drowned at Fort Benton , Mont., July 1, 1867.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fort Benton (Montana, United States) 26 14 0 0 0 user votes

† 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.