Cass County - NEGenWeb - Contains searchable pages with links to genealogy archives, vital records, lookups and biographies. Includes photographs and maps. - http://www.rootsweb.com/~necass/
Cass County Historical Society Museum - Tells the history of the county since its settlement in 1854. Includes details of exhibits, photographs, a calendar of events, hours and admission fees. Located in Plattsmouth. - http://www.nebraskamuseums.org/casscountymuseum.htm
Cass County - Includes offices, public meetings, and historical information. - http://www.cassne.org/
Visit Cass County Nebraska - Official tourism site, offering information about recreation, attractions, lodging, shopping, and meeting sites in Cass County. Includes a calendar of events. - http://www.visitcasscounty.com/