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Philip Henry Sheridan Papers: Subject File, 1863-1891; Reconnaissance of the Bighorn Mountains and the valleys of the Bighorn and Yellowstone rivers, 1877; 3 of 7

Philip Henry Sheridan Papers: Subject File, 1863-1891; Reconnaissance of the Bighorn Mountains and the valleys of the Bighorn and Yellowstone rivers, 1877; 3 of 7