Fonds consists of records documenting John Patterson's involvement with both the Muskoka Lakes Association and the Canadian Coalition on Acid Rain. Fonds is divided into two series, the Muskoka Lakes Association series and the Canadian Coalition on Acid Rain series. Fonds contains correspondence, agendas, minutes, financial reports, budgets, Muskoka Lakes Association Newsletters, Muskoka Lakes Association Yearbooks, reports, notes, advertisements, newspaper clippings, and photographs.