In the winter of 1846, the Donner Party was stranded by heavy snows in the Sierra Nevada mountains.
This is her story, as told by Dolly, the wooden doll she kept hidden in her dress..
But some survived, including eight-year-old Patty Reed, a girl filled with dignity and determination in the face of mortal danger.
The pioneers endured bitter hardships and many of them died.
In the winter of 1846, the Donner Party was stranded by heavy snows in the Sierra Nevada mountains