Absolutely fabulous, Diane.
I know that Sitting Bull and a large number of the Sioux tribe moved North into Canada for a period in the 1870s. The Canadian government stuck to the treaties that had been made---unlike the government below the border.
Are these photos of one tribe or a gathering of different tribes? In Montana, the Crow Indians have a special, annual event called the Crow Fair.
By the way, I nearly named my daughter after Crazy Horse's mother. I think "Rattle Blanket Woman Kettle" has a nice ring to it.