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…

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…