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Subject Terms
- Buildings -- Pennsylvania -- Pittsburgh -- Design and construction
- Coal mines and mining -- Pennsylvania
- Coal trade -- Pennsylvania
- Coke industry -- Pennsylvania
- Manufacturing industries -- Pennsylvania
- Railroads -- Pennsylvania
- Steel industry and trade -- Pennsylvania
- Whiskey industry -- Pennsylvania
- Abraham Overholt & Company.
- Allegheny County Courthouse and Jail (Pittsburgh, Pa.).
- Carnegie Brothers & Company, Ltd. Duquesne Steel Works.
- Carnegie Brothers & Company, Ltd. Monastery Coke Works.
- Carnegie Brothers & Company, Ltd. Youghiogheny Coke Works.
- Carnegie Steel Company. Lorimer Coke Works.
- Carnegie Steel Company. Lucy Furnaces.
- Carnegie Steel Company. Sciota Ore Mines.
- Carnegie Steel Company. Union Iron Mills.
- Carnegie, Phipps & Co..
- Clairton Brick & Manufacturing Company.
- Clairton Street Railway Company.
- D.H. Burnham & Company.
- Faraday Coal & Coke Company.
- Federal Steel Company.
- Frick Building (Pittsburgh, Pa.).
- H. C. Frick Coal and Coke Company.
- H. C. Frick Coal Company.
- H. C. Frick Coke Company. Beech Fork Works.
- H. C. Frick Coke Company.
- Highland Building (Pittsburgh, Pa.).
- Homestead Steel Works. Carrie Furnaces.
- Homestead Steel Works.
- Keystone Bridge Company.
- Pinkerton's National Detective Agency.
- Pittsburgh & Western Railway Company.
- Pittsburgh and Lake Erie Railroad Company.
- Pittsburgh Bessemer Steel Company.
- Shaw Coal Company.
- Union Arcade Building (Pittsburgh, Pa.).
- Union Club (Pittsburgh, Pa.).
- Union Iron & Steel Company.
- Union Trust Building (Pittsburgh, Pa.).
- United States Steel Corporation. Edgar Thomson Works.
- United States Steel Corporation.
- William Penn Hotel (Pittsburgh, Pa.).
- Abbott, William L. (William Latham), 1852-1930
- Berkman, Alexander, 1870-1936
- Burham, D. H. (Daniel Hudson)
- Carnegie, Andrew, 1835-1919
- Carnegie, Thomas M., 1843-1886
- Carr, William A.
- Childs, Otis H.
- Frick, Adelaide Childs, 1859-1931
- Frick, Helen Clay, 1888-1984
- Frick, Henry Clay, 1849-1919
- Frick, Martha, 1885-1891
- Gary, Elbert H. (Elbert Henry), 1846-1927
- Gayley, James
- Mellon, Andrew W. (Andrew William), 1855-1937
- Mellon, Thomas, 1813-1908
- Morgan, J. Pierpont (John Pierpont), 1837-1913
- Oliver, Henry William, 1840-1904
- Osterling, F. J., 1865-1934
- Overholt, Abraham, 1765-1834
- Overholt, Christian
- Overholt, Henry
- Overholt, J. S. R.
- Overholt, Jacob
- Overholt, Karl F.
- Phipps, Henry, 1839-1930
- Rogers, Henry Huttleston, 1840-1909
- Schwab, Charles M., 1862-1939
- Thompson, Josiah Vankirk
- Tintsman, Abraham
- Allegheny County (Pa.)
- Broad Ford (Pa.)
- Bucks County (Pa.)
- Cerro de Pasco (Peru)
- Clairton (Pa.)
- Connellsville (Pa.)
- Downtown (Pittsburgh, Pa.)
- Kentucky
- Monongahela River (W. Va. and Pa.)
- Monongahela River Valley (W. Va. and Pa.)
- Mount Pleasant (Westmoreland County, Pa. : Township)
- New Jersey
- New York (N.Y.)
- Pennsylvania, Western
- Pittsburgh (Pa.)
- Pocahontas Coal Seam (W. Va.)
- Virginia
- West Overton (Pa.)
- West Virginia
- Westmoreland County (Pa.)
- Architecture
- Business and Industry
- Labor
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