A bison and a bobtailed horse race across the sky, raising a trail of dust behind them--leaving in their wake the Milky Way to forever mark their path. An unknown Arapaho teller shared this account with an ethnographer in 1893, explaining that the race determined which animal would be ridden, which would be food. Traditional American Indian oral narratives, ranging from origin stories to trickster tales and prayers, constitute part of the great...