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Relief map of Cumberland Valley Railroad and connections
Casting a twelve-inch gun at South Boston
The manufacture of iron by the petroleum process
Lashing the stays of the Brooklyn Bridge (New York City, N.Y.)
Brown Patent Movable Bridge Tramway in operation (Cleveland, Ohio)
Hydraulic mining to break up iron ore for further processing (Chartersville, Ga.)
Bridges over Harlem River (New York City, N.Y.)
The Hell Gate explosion
Wall Street during financial panic of 1884
1st mining machine air operated - Zig Bostic - Biddle Mine
Denmark Mine, Pennsylvania
South Mine, William Carroll Supt. in the foreground
Kirker farm house, Claridge, Pennsylvania
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1880-11-12
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1880-06-10
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1881-09-30
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1882-10-13
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1882-02-10
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1883-01-12
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1882-09-15
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1883-11-09
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1886-11-19
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1883-09-11
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1882-11-25
Correspondence, Graham, Rowe and Company to E. I. du Pont de Nemours and Company, 1882-08-26

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