Library of Congress: American Memory., "The Westinghouse World: The Companies, the People, and the Places"

http://memory.loc.gov/ammem/papr/west/westpres.html

An illustrated history of the Westinghouse Air Brake Company, Machine Company, and Electric and Manufacturing Company, loaded with documents and images.

Referenced in:
Science and Invention
George Westinghouse [Railroads]
Westinghouse Electric Corporation [Science and Invention]