"In the late nineteenth century, as cities like Boston and New York grew larger, the streets became increasingly clogged with horse-drawn carts. When the great blizzard of 1888 brought New York City to a halt, a solution had to be found. Two brothers--Henry Melville Whitney of Boston and William Collins Whitney of New York City--pursued the dream of his city being the first American metropolis to have a subway and the great race was on. The competition...