The 2021 addition (1997-2021) contains physical and digital working files kept by Jane Feldman when she was the conservation chair of the Toiyabe chapter of the Sierra Club. Records include correspondence and research on various issues such as air pollution from transportation and nuclear waste. Other materials include notes from local Sierra Club officials, leadership documentation, and Feldman's subject files. Digital files in this series includes copies of environmentally focused documentary films, Sierra Club Toiyabe Chapter organizational files, and research on air pollution and transportation related issues and legislation.