Abstract: Records of the Midwest Office of the Sierra Club, the Club's first regional office, established in 1972. Significant because of the large number of midwestern elected officials on key congressional committees, the records reflect the organization's influence on major environmental legislation since its founding, and document lobbying efforts and grass roots organizing on environmental issues of regional and national importance. Included are surveys, studies, transcripts of hearings, reports, correspondence, position papers, and clippings relating to specific projects, and files concerning the Sierra Club's Committee on Political Education (COPE).