General LeRoy Stone demonstrated in 1876 his Centennial Monorail for transporting passengers .
General LeRoy Stone failed to exploit the concept also on the Bradford and Foster Brook Monorail , and this was closed after only one year due to a lethal boiler explosion in 1879 .
General LeRoy Stone demonstrated in 1876 his Centennial Monorail for transporting passengers , but failed to exploit the concept also on the Bradford and Foster Brook Monorail , and this was closed after only one year due to a lethal boiler explosion in 1879 .