LZT5504463: Westward The Course of Empire Takes Its Way: Laying Track 600 Miles West of St. Louis, Missouri; Alexander Gardner, American, born Scotland, 1821 - 1882; October 19, 1867; Albumen silver print; Image: 33.2 x 47.6 cm (13 1/16 x 18 3/4 in.), Mount: 48.7 x 61 cm (19 3/16 x 24 in.) -, Gardner, Alexander (1821-82) / Bridgeman Images