The Historical Society of Dauphin County
- Located at the John Harris-Simon Cameron Mansion in Harrisburg, HSDC works to collect, preserve, exhibit, publish, and promote interest in the history of Dauphin County.
- http://www.dauphincountyhistory.org/

Dauphin County Office of Human Services
- General information on mental health, mental retardation, children and youth and drug and alcohol services.
- http://www.dauphincounty.org/human-services/

Dauphin County Mental Health/Mental Retardation Program
- Services available for people with developmental disabilities.
- http://www.dauphincounty.org/human-services/mental-health-retardation/

Dauphin County Genealogy Resource Center
- Resources for researchers, including historical atlases, online forum, and links to other sites.
- http://maley.net/dauphin/