Statistics for occurrence #1 of “United States” in chapter 2, page 37 of G. S. Hillard, Life and Campaigns of George B. McClellan, Major-General , U. S. Army:

...unters. Up to this time the region round the head-waters of the led River had been unexplored by civilized man; and the only information we had as to the sources of one of the largest rivers in the United States was derived from Indians and semi-civilized Indian hunters. The expedition started from Fort Belknap, upon the Brazos River, on the 2d of May, and marched to Red River at the mouth of the Little ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 94 0 0 0 user votes
United States (New Mexico, United States) 6 0 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.