The latest Ken Burns documenatary, "The American Buffalo" tells the story of the near-total extermination of the Bison, and by extension, the Native American Indian way of life, and includes many of these photos. I felt like it was a better presentation of the reality of the West in 3 hours than the 8-episode "The West" from the 1990s, which only spent a scant few minutes on the Bison. Highly recommended.