The Donner Party was a group of California-bound American settlers caught up in the "westering fever" of the 1840s. After becoming snowbound in the Sierra Nevada in the winter of 1846-1847, some of the emigrants resorted to cannibalism. Although this aspect of the tragedy has become synonymous with the Donner Party in the popular imagination, it actually was a minor part of the episode.The author was about 4 at the time. The first part of the book accounts the tragic journey and rescue attempts; the last half are reminiscences of the child orphan, passed from family to family while growing up. (Summary from Wikipedia & Tricia G)