Jay Gould was the 19th century's greatest robber baron, yet he isn't a household name like Vanderbilt or Rockefeller. Here are five things you didn't know about the man who created the Black Friday market collapse of 1869. Learn more about Jay Gould in American Rascal: https://www.simonandschuster.com/books/American-Rascal/Greg-Steinmetz/9781982107406

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