The Monongahela River circa 1909. "Duquesne Steel Plant, Carnegie Steel Co., Duquesne, Pennsylvania." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.
  BUY PRINT    The Monongahela River circa 1909. "Duquesne Steel Plant, Carnegie Steel Co., Duquesne, Pennsylvania." 8x10 inch dry plate glass negative, Detroit Publishing Company. | Click image for Comments. | Home | Browse All Photos