Ruth Zeldenrust has been a member of the Cook County Farm Bureau® Board of Directors since 2013. Zeldenrust has been a County Farm Bureau Certified Director since 2022 and currently serves as Secretary/Treasurer and Chair of the Audit and Governmental Affairs Committees. Zeldenrust, along with her husband Henry Campbell, owns and operates Zeldenrust Farm Market and Greenhouses, a third-generation family farm, where she grows and sells vegetables, bedding plants, honey, and a variety of additional products. Zeldenrust is the Vice-Chair of the Political Action Committee and is an ACTIVATOR Trustee. In addition to her involvement in Farm Bureau, Zeldenrust is a graduate of the Illinois Agricultural Leadership Program, Class of 2014. She and her husband Henry Campbell have ten grandchildren.