This Month in Montana History: September

September 17, 1851; 171 years ago: The Fort Laramie Treaty is signed by representatives of the United States, Cheyenne, Sioux, Arapaho, Crow, Assiniboine, Mandan, Hidasta, and Arikara nations. The treaty set forth boundaries between the nations and ensured that white settlers would have safe passage west. The treaty was broken almost immediately by white settlers moving into what is now Colorado and Kansas.

September 16, 1855; 167 years ago: Montgomery H. Parker is born in Kentucky. He moved to Boulder in 1887, where he was elected Jefferson County Attorney in 1889 and again in 1892, then elec...