Remarks on Rainbow Bridge Inspection Trip, (including pre-trip briefing session remarks in the hangar at Page, Arizona, and evening discussion conference after daylong inspection trip), Page, Arizona, April 29, 1961
Remarks to The Inter-American Specialized Conference to Deal With Problems Relating to the Conservation of Renewable Natural Resources in the Western Hemisphere, Mar Del Plata, Argentina, October 18, 1965
Statement of Stewart L. Udall before the Transportation Subcommittee, House Appropriations Committee, (regarding the Supersonic Transport Plane(SST), Washington, D.C., March 2, 1971
"The World Environment: A Program For The People of Planet Earth," Eleventh Annual Grady Gammage Memorial Lecture, Arizona State University, Tempe, Arizona, February 16, 1972
"The Balanced Budget -- Everyone Talks About It, but No One Does Anything", Morris K. Udall, House of Representatives, Washington, D.C., June 26, 1961.