The American Plains Bison (Bison bison) are large mammals in the Bovidae family, recognizable for their large head, shaggy coats, pronounced hump, and close association with the American West. Bison are commonly and incorrectly referred to as …

Conservation efforts and reintroduction of the American bison (Bison bison) in Colorado began in Denver during the early twentieth century. By that time, the bison population had declined precipitously since the mid-nineteenth century because of…

On January 14–15, 1865, immigrant Holon Godfrey found his family homestead in Colorado Territory under attack by about 100 Indigenous warriors engaged in a campaign of reprisal attacks after the Sand Creek Massacre of November 1864. The fierce battle at…

The Little Arkansas Treaty refers to a pair of treaties signed between the US and Indigenous nations in Kansas in mid-October 1865: one with the Southern Arapaho and Southern Cheyenne nations and one with the Comanche and Kiowa. Of the two, the treaty…

The oldest continuously occupied town in Colorado, San Luis sits along Culebra Creek, just west of the Sangre de Cristo Mountains in the southeast portion of the San Luis Valley. In April 1851, Hispanos from Taos, New Mexico, founded San Luis on the…

Colorado’s role in the American Civil War (1861–65) was part of a broader geopolitical contest: control of the American Southwest. The war began in 1861, just two years after the Colorado Gold Rush and mere months after Congress established the Colorado…