August 27, 1980 - Stewart Udall, former U.S. congressman and founder of an environmental consulting firm called Overview, speaking at a symposium on the future held at Mankato State University. Udall’s address was on ecology and energy across the country, as well as practicing law in Washington, D.C. Udall served U.S. Interior Secretary under Presidents Kennedy and Johnson.
July 18, 1979 - Stewart Udall, environmentalist and former Secretary of the Interior, and Leon Martel, executive vice president of the Hudson Institute, debate the resolution "There Is an Energy Crisis in the United States" at the first annual Charles A. Lindbergh Memorial Lecture at St. Cloud State University. Stewart Udall argued there is an energy shortage in the United States, while Leon Martel argued the opposite.
October 1, 1976 - "Preserving the Rural Environment" was discussed at the Conversations in the Countryside conference held this summer at Southwest State University in Marshall. Speakers were Stewart Udall, a former Secretary of the Interior and Charles Reinert, an Associate Professor of Physics at Southwest State University. Moderator of the discussion was Morris Behrman, a farmer from Wood Lake. Another participant was Clint Haroldson, a farmer from Renville, who served as a resource person for the discussion. The program began with some formal remarks from Udall.
May 15, 1975 - A Midday presentation of speeches by environmentalist and author Sigurd Olson, and former Interior Secretary Stewart Udall at the annual meeting of the Northern Environmental Council in Superior, Wisconsin.
May 15, 1975 - A Midday presentation of speeches by environmentalist and author Sigurd Olson, and former Interior Secretary Stewart Udall at the annual meeting of the Northern Environmental Council in Superior, Wisconsin.