Men work on Denver and Rio Grande Railroad tracks over Alameda Avenue in Denver, Colorado; a concrete batch plant is in the background.
Denver and Rio Grande Railroad Company--1900-1910.; Denver (Colo.)--1900-1910.; Railroad bridges--Colorado--Denver--1900-1910.; Railroad maintenance & repair--Colorado--Denver--1900-1910.; Streets--Colorado--Denver--1900-1910.
History of mines and mining in Pennsylvania, and an alphabetical index by miner’s name for fatal and non-fatal mine accidents in Pennsylvania for the years 1869, 1871, 1872, 1874 (partial), 1875, 1877,
1879, 1880, 1882, 1883, 1884, 1887, 1888,...