Formed in 1972 to campaign for a referendum that would establish a conservation district in Sangamon County, Illinois by levying taxes to purchase undeveloped lands for the purpose of conservation and recreation. Major campaign strategists of the Committee were Madeline Dorosheff and her son, Nicholas Dorosheff. Referendum was defeated in 1974. Memoranda, correspondence, membership and mailing lists, promotion and campaign notes, organizational plans, speech transcripts, brochures, petitions, a ballot, clippings, slides and slide narrative, press releases, summaries and excerpts of the Illinois Conservation District Act, and personal notes documenting the Committee's membership, supporters, campaign strategies and work in support of the County Conservation Act referendum of March 19, 1974, and its use of the Macon County Conservation District as a model. Includes correspondence generated by the Sangamon Conservation Council. Series I: The Administrative Files (1972-1974), Box 1, consist of brochures, ballots, petitions, plans, booklets, slides, slide narratives, newspaper clippings, and sundry research materials collected and generated by the District Committee. Series II: Mailing lists include local conservation mailing cards (active, in-active, official individuals, and out-of-town groups and supporters), mailing lists for official individuals, private individuals, groups in the city and county, projected lists (along with copies of materials mailed). The series documents the Committee membership, supporters, and general campaigning.