English: St. Peter's Mission near Cascade, Montana, in the United States, in 1884 shortly after its founding. St. Peter's was founded by priests belonging to the Society of Jesus (the Jesuits), a Roman Catholic men's religious order. It was established at Bird Tail Rock in 1871 after several previous locations were abandoned. Ursuline nuns joined the mission in October 1884 to assist in running the mission and teaching Native American children.

In 1884, the mission consisted of two log buildings -- a chapel with a bell tower connected to a common sleeping area for priests, and a lower structure which consisted of a sleeping area for nuns and a kitchen.

Depicted here are several of the Ursuline nuns with some Native American children/students. In the wagon at the right is Mary Fields, also known as "Stagecoach Mary", a former African American slave who came to the mission in 1885 to nurse one of the Ursulines. She stayed at the mission until 1894.