Abstract: Records, 1937-2014, of an organization founded in 1935 as the Madison Bird Club, which in 1949 changed its name to the Madison Audubon Society. Subjects documented include the formation and running of the Wisconsin Audubon Camp (now Hunt Hill Nature Center and Audubon Sanctuary); protests of the Echo Park damming project, Garrison Pass project in North Dakota, DDT usage to combat Dutch Elm disease, and Horicon Marsh; efforts in land conservation and scholarship; and complete documentation of the Film series the organization hosted for many years. Also included are records of the annual seed sale and financial and administrative records of the Goose Pond Sanctuary, a preserve operated by the Society. The Society's interaction with other conservation organizations such as the Wisconsin Society for Ornithology, Wisconsin Audubon Council, North Central Audubon Council, and the National Audubon Society is also documented.