The web address of the Wissahickon Valley Historical Society is: www.wvalleyhs.org
The address of the Wissahickon Valley Historical Society is: Po Box 96, Ambler, PA 19002
The address of the Roxborough Manayunk Wissahickon Historical Society is: 6245 Ridge Avenue, Philadelphia, PA 19128
The web address of the Historical Society Of Pennsylvania is: http://www.hsp.org
The web address of the Historical Society is: www.BlairsvilleHistoric.com
The web address of the Catholic Historical Society Of West Ern Pennsylvania is: www.catholichistorywpa.org
The web address of the Historical Society is: http://smhistoricalsociety.com
The web address of the Hellertown Historical Society is: www.hellertownhistoricalsociety.org
The web address of the Stewartstown Historical Society is: www.stewhist.org
The web address of the Pottstown Historical Society is: www.pottstownhistory.org
The web address of the Haycock Historical Society is: www.haycockhistoricalsociety.org
The web address of the Springfield Historical Society is: www.springfieldhistoricalsociety.org
The address of the Historical Society Of Pennsylvania is: 1300 Locust St, Philadelphia, PA 19107-5661