Simpson, J. H. 1. (1869). The shortest route to California: Illustrated by a history of explorations of the great basin of Utah with its topographical and geological character and some account of the Indian tribes. Philadelphia: J.B. Lippincott.

Simpson, J. H. 1813-1883. The Shortest Route to California: Illustrated By a History of Explorations of the Great Basin of Utah With Its Topographical and Geological Character and Some Account of the Indian Tribes. Philadelphia: J.B. Lippincott, 1869.

Simpson, J. H. 1813-1883. The Shortest Route to California: Illustrated By a History of Explorations of the Great Basin of Utah With Its Topographical and Geological Character and Some Account of the Indian Tribes. Philadelphia: J.B. Lippincott, 1869.