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

...formation 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 Witchita, and up the right bank of the latter stream to the mouth of the Big Witchita, where they crossed Red River. Proceedin...
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Brazos River (Texas, United States) 166 4 2 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.