Mercer County Historical Society
- Based in Mercer. Includes event information, mission statement, relevant forms and related links.
- http://www.mchspa.org/

Mercer County, PA
- Part of the USGenWeb project this site provides resources for history and genealogy research.
- http://www.rootsweb.com/~pamercer/

Prince of Peace Center
- Provides descriptions of the Center's services for the needy, special events, news, special events, donations, and volunteerism. Located in Farrell.
- http://www.princeofpeacecenter.org

Community Food Warehouse
- Provide low cost and nutritional food products to member agencies. Includes list of member agencies, resources and how to help.
- http://nauticom.net/www/food/

Keystone Blind Association
- Daily news, yearly calendar, employment opportunities for the blind and disabled, information on services, a page for children.
- http://www.keystoneblind.org/