109-115 Wood Street (also known as Hartje Bros. Paper Manufacturing Co. and the Pittsburgh Ballet Theater Building) are two buildings located in downtown Pittsburgh, Pennsylvania, USA. 109-111 was built in 1897, and 113-115 was built in 1902. The architect was Charles Bickel. The buildings were added to the List of Pittsburgh History and Landmarks Foundation Historic Landmarks in 1975, and added to the National Register of Historic Places on April 4, 1996.