Note 45 — Chapter I · Why I went to Great Salt Lake City.—The various Routes.—The Line of Country traversed.—Diaries and Disquisitions. (continued 2)
Reading edition
According to Lieutenant Warren, the tract called the Sand-hills occupies an area, north of the Platte, not less than 20,000 square miles: from between the Niobrara and White Rivers to the north, probably beyond the Arkansas in the south.