Montana Before History: 11,000 Years of Hunter-Gatherers in the Rockies and on the PlainsEbookMontana Before History: 11,000 Years of Hunter-Gatherers in the Rockies and on the PlainsbyDouglas H. MacDonaldRating: 0 out of 5 stars0 ratingsSave Montana Before History: 11,000 Years of Hunter-Gatherers in the Rockies and on the Plains for later