1868
Photo of George Westinghouse courtesy of the George Westinghouse Museum Foundation
www.georgewestinghouse.com

1869
Photo of air brake courtesy of the George Westinghouse Museum Foundation
www.georgewestinghouse.com

1876
*Photo of Alexander Graham Bell telephone courtesy of PBS
www.pbs.org

1877
*Photo of Thomas Edison phonograph courtesy of PBS
www.pbs.org

1883
*Roebling's Brooklyn Bridge

1888
Photo of Eastman Kodak box camera ©2000, Paul T. Barone
BoxCameras.com Collection

Photo of Nikola Tesla courtesy of Primeline America
http://primeline-america.com

1892
Illustration of diesel engine courtesy of Diesel Engines for Land and Marine Work, 1917
www.uh.edu

1898
*Photo of the zeppelin airship courtesy of Britannica.com Inc.
http://www.britannica.com

*Images pending approval.