The Jumping-Off Place

In the summer of 1910, four orphans leave their home in Wisconsin to "prove up" their claim to a parcel of land on the South Dakota prairie. Seventeen-year-old Becky Linville and her younger siblings — Dick, Phil, and Joan — hadn't intended to move to the newly opened Rosebud Reservation by themselves. But with their Uncle Jim's untimely death, the children are forced to follow up on the claim without adult supervision.
Uncle Jim left detailed instructions for his young relatives; but right...