Bound With: Contributions to the geography of the United States, 1923-1924 / Marius R. Campbell, geologist in charge -- Molybdenum deposits; a short review, by Frank L. Hess -- Geology and ore deposits of the Rochester District, Nevada / Adolf Knopf -- Geology and ore deposits of the Aravaipa and Stanley Mining Districts, Graham County, Arizona / Clyde Polhemus Ross.