The Hagley Vault

On this date in 1910, the U.S. Congress created Glacier National Park in northwestern Montana. 

The formation of the park would set off a decades long legal battle between the U.S. government and the Blackfeet people whose homeland the park's footprint encompassed. The eastern portion of the newly designated parkland was a longtime home to the Blackfeet people, and had been designated in 1855 as Blackfeet Reservation land by the Lame Bull Treaty. Upon the creation of the park, the U.S. government took the position that the region's designation as a National Park invalidated a recent 1895 treaty in which Chief White Calf of the Blackfeet had agreed to sell a portion of the reservation to the U.S. government with the caveat that his people would retain usage rights to the area for hunting and other activities so long as the region remained public land.