As early as 1804 the power of the waters was known to white men, and a settlement had already begun there at that time. Tradition says that the Indians knew of the springs long before the Spanish invasion, and that they warred among themselves for their possession. Finally a truce was made, and thereafter all the tribes availed themselves of the healing waters. 5. PLATT NATIONAL PARK The Platt National Park contains many sulphur and other springs possessing medicinal value. It includes one and a third square miles in southern Oklahoma, and was created in 1906. 6. MOUNT McKINLEY NATIONAL PARK The Mount McKinley National Park, Alaska, was established early in 1917. It is in the approximate center of Alaska and embraces twenty-two hundred square miles. Mount McKinley is known to many Indians as "The Great One." Its summit is 20,300 feet above sea-level. On the north this stupendous mountain is exceedingly precipitous and rises 18,000 feet in a distance of thirteen miles. It is doubtful if there is a peak in the world that rises so high above the limits of tree growth. And no mountain that I know of has slopes so completely snow-covered. Its snow-line is at the altitude of 7000 feet, and from this altitude upward only a few crags and rocky ridges show. The upper 14,000 feet of steep slopes appears a vast towering white mass of glaciers and snow. The largest glacier is the Muldrow. It is thirty-nine miles long. The summit of this peak and a part of its slopes are embraced in the Mount McKinley National Park. This Park is a wild-life refuge. Its slopes are the greatest known big-game range on the continent. Here are mountain sheep and caribou by the thousand. Moose are common. Beaver are plentiful. And there are grizzly, brown, and black bear. Many kinds of birds use the region for their summer nesting-land. Brilliant wild flowers abound. Spruce, birch, cottonwood, and willow are the more common trees, but none of them grow large. In 1902, D. L. Raeburn, of the Geological Survey, explored this territory and brought out much valuable information concerning it. Mr. Raeburn determined most of the boundary-line of the present Park. In 1903, James Wickersham attempted to scale the peak. It was first conquered in March, 1913. The creation of this Park was brought about chiefly through the efforts of Charles Sheldon. When completed, the Alaskan railroad will be within fifteen miles of the Park boundary-line. XIV CANADIAN NATIONAL PARKS