This book captures the Great Plains at a particular moment in their economic history.

Here is the best quote:

Certainly, no man was ever happier than the first plains Indian to ride a horse, when time and space changed in an instant, and two feet were replaced by four, and a ridge that used to be a long, hot walk away was suddenly as near as a thought, a little leaning forward, and a tap of heel to flank…. The Minicounjou Sioux John Fire Lame Deer, in his book Lame Deer, Seeker of Visions, says: “For bringing us the horse we could almost forgive you for bringing us whiskey.”