The Administrative Records (1976-1988) contains materials that document the management of both the Sierra Club Toiyabe Chapter as a whole and the Southern Nevada Group in particular. It includes Executive Committee and Southern Nevada Group meeting agendas and minutes, financial records, bylaws, and resolutions.

The Subject Files (1951-2003) provides documentation on the variety of environmental issues in which the Sierra Club Toiyabe chapter was interested or involved. It is divided into twelve files and includes significant amounts of information on the MX Missile Project, Aerojet General Corporation Florida-Nevada land swap, wilderness in Nevada, nuclear issues, and off-road vehicle events. Other environmental issues or areas of concern addressed include (but are not limited to) Red Rock Canyon Recreation Lands/National Conservation Area, legislation to protect the California desert, Groom Range Land Withdrawal, Sagebrush Rebellion, and transmission line projects. Among the documents included are correspondence, legislation, memoranda, newspaper clippings, newsletters, magazine articles, pamphlets, event information, and general information.