J.P. Morgan was an American financier, banker, and philanthropist who dominated corporate finance and industrial consolidation in the late 19th and early 20th centuries.
Charles Tyson Yerkes, an American transportation magnate, dominated the rapid transit system in Chicago during the late 19th and early 20th centuries.
Alfred Taubman was an American real estate billionaire and shopping mall pioneer who transformed the retail industry with his innovative mall designs.