Hockett, Homer Co. Political and Social Growth of the United States 1492-1852. New York: The Macmillan Co., 1933.
Irving, Washington. Astoria. New York: G. P. Putnam’s Sons.
Kipling, Rudyard. American Notes. Issued in several editions. One chapter contains an account of a trip through Yellowstone in 1889.
Nevins, Allen. Frémont: Pathmaker of the West. New York: D. Appleton Century Co., 1939.
Paxson, Frederick L. The Last American Frontier. New York: Macmillan Co., 1922.
Sanders, Helen F. History of Montana. Chicago: The Lewis Publishing Co., 1913.
Walgamott, C. S. Six Decades Back. Caldwell, Idaho: Caxton Printers, 1936.
Yellowstone Park Scrap Books I, II, III. Park Library, Mammoth, Wyoming.
FOOTNOTES
[1]The forests are composed principally of conifers. Of these the lodgepole pine predominates. It has a shallow root system, and as a result the area is conspicuous by the amount of fallen timber.