"Map of Lily White Area" - Whitman National Forest - Wallowa Mountains. "United States Department of the Interior Geological Survey - Sparta Quadrangle - Oregon - Baker Co. - 15 minute series (topographic)"
"IV. [No source is named for this chapter reference.] - Marble Flat Road, Grouse Creek or Marr Flat Road, summer of 1912, was the most direct route between Upper Imnaha and country on the plateau above. It takes travelers from the top of Marr Flat to…