Credit: Library of Congress
Duquesne, Allegheny County, Pennsylvania, 1897. Drawn by T. M. Fowler. Birds eye view of the town of Duquesne and the Monongahela River, with numbered identification legend which includes the following: 3. Duquesne Water Works 4. Electric Light Plant 7. Howard Plate Glass Works 8. Carnegie Furnaces 9. Carnegie Steel Works 10. Duquesne Tube Works 11. Oliver Station, P.V. and C. RR
