Angle of Repose

Angle of Repose is a 1972 Pulitzer Prize–winning novel by Wallace Stegner about a wheelchair-using historian, Lyman Ward, who has lost connection with his son and living family and decides to write about his frontier-era grandparents. It won the Pulitzer Prize for Fiction in 1972. The novel is directly based on the letters of Mary Hallock Foote, later published as A Victorian Gentlewoman in the Far West.
Stegner's use of substantial passages of Foote's actual letters as correspondence from his fictional character Susan Burling Ward caused a continuing controversy.