Where exactly was United States Rolling Stock Company located?
That depends. The short answer answer is the shops were located north east of where the present day South Shore Station in Chicag is. As you wait for a South Shore train today, and look across the Norfolk Southern switching yard you can see some old light blue buildings. Those buildings are all that is left of U.S. Steel in Hegewisch. Those buildings once belonged to Presses Steel Car Company, a predecessor of USRS Co. The long answer is more difficult. At the time of its demise, USRS was thought to be the largest manufacturer of rolling stock (freight cars for railroads) in the United States. The company had its headquarters in New York City but it had shops in Hegewisch (the largest) as well as Decatur, Alabama; Anniston, Alabama; and Urbana, Ohio. The principle share holders of the company were principally from London, England.