Hi List. The Rostraver Twp. Historical Society is seeking other southwestern Pa. historical society's addresses for the purpose of establishing an on going Historical Society relationship. Please send me your Historical Society name, address and phone number. The Rostraver Twp. Historical Society meets at the historic Finley House in Cedar Creek Park, 2nd Thursday of the month, at 6 PM. The public is welcome. Mary Lou Magiske Correspondence Sec.