Vintage Antique retailer Post Cards Pittsburgh Flood 1907

My grandparents were from Pittsburgh, PA. They were married in retailer 1914. My grandmother loved history, especially local Pittsburgh events. The Great Flood of 1907 affected everyone in Pittsburgh. These 12 postcards were probably issued a year or two after the flood, although I'm not sure of the date. Each card is approx. 5-1/2 inches by 3-1/2 inches. The cardstock is thicker than today's postcards. There are some discolorations on the backs of the cards, but no writing. They're in good shape for their age. Sold only as a set of 12 cards. THESE CARDS ARE NOT RETURNABLE.