Riversdale House Museum - History, visitor information and rental details. - http://www.pgparks.com/places/eleganthistoric/riversdale_history.html
Wikipedia: Riverdale Park, Maryland - Free encyclopedia with geography, demographics and history. - http://en.wikipedia.org/wiki/Riverdale_Park%2C_Maryland
St. John Evangelical Lutheran Church - ELCA. Includes worship schedule, list of fellowship, community action, and educational programs, and locator map. - http://rjgerman.home.comcast.net/sj/index.html
Solid Rock Church - Affiliated with Sovereign Grace Ministries. Includes statement of beliefs, goals for church members and list of home-meeting groups. - http://solidrockchurch.net/