- In 1716 the governor of York Factory, John Knight, wrote in his diary about the Rockies. According to spiralroad.com, Indians told Knight that to the west there were mountains so high, the tops of them were hard to see without clear weather.
- The first time these mountains were referred to as "Rocky Mountains" was in 1753 in Legardeur St. Pierre's journal. In the journal, St. Pierre referred to the mountains as "Montaignes de Roche."
- The Cree Indians, who inhabited Canada, the Dakotas and Minnesota, also inhabited the prairies east of the Rocky Mountains. From the prairies, the Cree could see a large rocky mass, which they called "as-sin-wati." Translated, this means Rocky Mountains.
- In 1843, mountain man Rufus Sage wrote about "lofty ledges" of rock that went through the clouds. This was the first account of the Rockies that reached easterners.
- Rocky Mountain National Park became a national park in 1915, when President Woodrow Wilson declared Rocky Mountain National Park the tenth national park in the United States.
