Historic Landmark Plaques 1968–2009(PDF). Pittsburgh, PA: Pittsburgh History & Landmarks Foundation. 2010. Archived(PDF) from the original on July 21, 2011. Retrieved July 30, 2011.
Historic Landmark Plaques 1968–2009(PDF). Pittsburgh, PA: Pittsburgh History & Landmarks Foundation. 2010. Archived(PDF) from the original on July 21, 2011. Retrieved July 30, 2011.