The fonds consists of photographs and slides of scenes of Vancouver, Jasper, New Westminster, Port Moody, North Vancouver, Richmond, West Vancouver, Port Coquitlam, Coquitlam, Surrey, Matsqui and Huntingdon, many depicting railway activity.

The fonds consists of photographs depicting Vancouver panoramas, Victoria Harbour, animals, children, ferries, farming, and various B.C. towns.

The fonds consists of photographs of towns, villages, farms, buildings and scenery in B.C. taken for the Fraser Valley Regional Library.

The fonds consists of photographs of operations of the Pacific Great Eastern Railway, including general scenes, trackage, rolling stock, and bridges.

The fonds consists of photographs depicting mining in Anyox and Kimberley, B.C., and of various aspects of logging in B.C.

The fonds is arranged in 12 series: Alpha-numeric series (A1-W27), 1959-93; Derrick Mallard series, 1947-2001; Gwen Mallard series, 1968-97; B.C. Environmental Associations, 1972-2000; BC Environmental newsletters, 1970-2000; Community Associations, 1990-2000; Capital Regional District, 1990-2000; Foundations, 1994-2000; Issues, 1973-2000; Land preservation, 1990-2000; Awards, 1992-2001; Photographs. The Alpha-Numeric system was established by Derrick Mallard in the early years of his environmental work. The vast majority of the files were left un-filed, and constitute the Mallards research files relating to their C.A.S.E. work. These have been arranged in series reflecting the subject groupings of his early alpha-numeric system. Administrative files relating to C.A.S.E. have been arranged in the B.C. Environmental Associations series. Approximately 300 reports and publications have been transferred to Special Collections, and cataloged as the Derrick Mallard Collection. They are on a wide variety of environmental subjects, including: water, sewage, transportation, parks, farming, noise, fishing, endangered species and global issues.

The fonds consists of 6 series: Khutzeymateen, 1981-1993; Ecological Reserves, 1972-1989; Reports, 1982-1996; Photographs, ca.1987; Audiocassettes, 1987-1988; Videos, 1987-1990. The Khutzeymateen series consists of correspondence, grizzly sanctuary proposals, maps, educational programming, press clippings, and office files. The Ecological Reserves series consists of maps and descriptions of B.C. reserves. The Reports series consists of reports on bear, timber, and ecological studies, management proposals, and other publications. The Photographs series consists of Khutzeymateen slides and prints. The Audiocassettes series consists of lectures. The Video series consists of videos about grizzlies in the Khutzeymateen and Canada, and wilderness issues.

The collection consists of rare and difficult to obtain limited distribution documents relating to specific case studies, most of which have been printed and distributed by governments and industrial agencies. They generally contain environmental data, and may have interpretive sections. Some documents contain copies of government permits and associated correspondence. The collection is arranged in five primary research subjects: Pulp and Paper Mills, Toxicolocy, Victoria Sewage, Coast and Island Mines, and Regional Collections. Each subject is divided into case studies. Within each case study, documents are arranged in alphabetical order by author.

The fonds consists of correspondence, reports, clippings, photographs and hand-drawn maps that document Madsen's involvement in various environmental campaigns in the Okanagan region. Campaigns include: Bodega Head, 1962; Brent Mountain, 1961-92; Spotted Lake, 1978-89; Trout Creek, 1972-93; and Uranium, 1971-95. The fonds also includes several files on the Sierra Club, 1971-83; and the Okanagan Similkameen Parks Society, 1966-69; and 4 chalk drawings of landscapes.

The fonds consists of environmental subject files, which include reports, clippings, correspondence, and letters to newspaper editors.