Historical Collection Open House Posted by Ravenswood Historical Society Webmaster on August 13, 2017 Posted in: Past Programs. Tagged: Chicago History, Conrad Sulzer Regional Library, Helen Zatterberg, Open House. Related posts: Ravenswood Lake View Historical Association Raffle Posts navigation ← Giants in the Park Part II: Unveiling the Histories Behind Lincoln Park’s Monumental Art The Good Fight: Life Lessons from a Chicago Progressive →