On May 10, 1869, a golden spike was driven into the last link joining the rails of the First Continental Railroad at Promontory Summit, Utah. Made of 17 carat gold, and driven into a pre-drilled hole in the last ceremonial tie, it bore this inscription: “May God continue the unity of our Country, as this Railroad unites the two great Oceans of the world.” And indeed it did. But what we often don’t know are the stories of the ordinary men and women behind these achievements, and the ones who have