Birth: August 3, 1953, Baraboo, Wisconsin. Parents: Alan and JoAnne Henderson. Education: Graduated from Pleasant Valley High School, 1971; B.A., Carthage College. Activities: Construction worker since 1971. Member: American Association for the Advancement of Science, Union of Concerned Scientists, NRDC, EDF, Sierra Club, Wildlife Federation, Common Cause, ACLU, NOW, Practical Farmers of Iowa, Nature Conservancy, American Farmland Trust, Laborers Local #309. Term: First.