In 1859, Gould began speculative investing by buying stock in small railways. His father-in-law Daniel S. Miller introduced him to the railroad industry by suggesting that Gould help him save his investment in the Rutland and Washington Railroad in the Panic of 1857. Gould purchased stock for 10 cents on the dollar, which left him in control of the company. He engaged in more speculation on railroad stocks in New York City throughout the Civil War, and he was appointed manager of the Rensselaer and Saratoga Railroad in 1863.