- Bessemer, Henry
- Carnegie, Andrew
- Ford, Henry
- Fulton, Robert
- Gompers, Samuel
- Gould, Jay
- Hill, James J.
- Jones, Mary Harris (Mother Jones)
- Marx, Karl
- McCormick, Cyrus
- Morgan, J. P.
- Morse, Samuel F. B.
- Muckrakers, The: Jacob Riis, Upton Sinclair, Lincoln Steffens, Ida Tarbell
- Owen, Robert
- Rockefeller, John D.
- Roosevelt, Theodore
- Smith, Adam
- Stephenson, George
- Tesla, George Westinghouse and Nikola
- Watt, James
- Whitney, Eli
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