Sperry Rail Service

Company History: Sperry Rail Service is a company contracted by most of the major railroads in North America to inspect rail. The rail flaw detector car was invented by Dr. Elmer A. Sperry. To railways and railfans, Sperry's name is most likely associated with the Sperry Rail Detector car.From Wikipedia

Brief History: The U.S. is a country of 50 states covering a vast swath of North America, with Alaska in the northwest and Hawaii extending the nation’s presence into the Pacific Ocean. Major Atlantic Coast cities are New York, a global finance and culture center, and capital Washington, DC. Midwestern metropolis Chicago is known for influential architecture and on the west coast, Los Angeles' Hollywood is famed for filmmaking.