"Why the Cliff Dwellers Vanished," Scientific American, 1920 December 25, "The Falls of Maderia," Pan-American Union, 1923 June 23, "Trail of the Rainbow Bridge," Stone and Webster Journal, 1923 January 29, "The Navajo Population Problem," Stone and Webster Journal, [date unclear] May, and "What America Has Done for Haiti," Stone and Webster, 1929 July.