Title: The man from Clear Lake
Subjects: Biography, Conservationists, Earth Day, Environmental conditions, Environmental protection, Environmentalism, Environmentalists, Governors, History, Legislators, United States, United States. Congress. Senate, United states, congress, senate, biography, Legislators, united states, Governors, united states, United states, environmental conditions, United states, history
Places: United States, Wisconsin
People: Gaylord Nelson (1916-)
Time periods: 20th century