The Whipple expedition in Arizona, 1853-1854 Author D.E. Conrad Article Date Summer 1969 Journal Title Ariz and the West
The engineer and the canyon Author D.L. Smith Article Date July 1960 Article Abstract Robert Brewster Stanton and the survey for a railroad through the canyons of the Colorado. Based on the original sources Journal Title Utah Hist Q
Surveyors ambushed in canyon Author R.G. Willson Article Date October 24, 1964 Article Abstract Experience of W.J. Palmer's survey party in Sycamore Canyon in northern Arizona in 1867 Journal Title Ariz Days & Ways