"One Thousand White Women"(Jim Fergus)

A very readable novel based on fact.Here is a quick summary from Jim Fergus' own site:

"One Thousand White Women begins with May Dodd's journey west into the unknown. A government program, in which women are brought west as brides for the Cheyenne, is her vehicle. What follows is the story of May's adventures: her marriage to Little Wolf, chief of the Cheyenne nation, and her conflict of being caught between two worlds, loving two men, living two lives. Jim Fergus has so vividly depicted the American West that it is as if these diaries are a capsule in time. "