View of a placer mining operation at Keystone Placer Mine, San Miguel County, Colorado; shows a monitor nozzle and a water pipe.
Keystone Mine (San Miguel County, Colo.)--1880-1900.; San Miguel County (Colo.)--1880-1900.; Hydraulic mining--Colorado--San Miguel County--1880-1900.; Mining--Colorado--San Miguel County--1880-1900.; Penstocks--Colorado--San Miguel...
View of mining operations at the Keystone Mine in San Miguel County, Colorado. Shows sluice boxes and a large pipe with hydraulic nozzles.
Keystone Mine (San Miguel County, Colo.)--1880-1900.; San Miguel County (Colo.)--1880-1900.; Flumes--Colorado--San Miguel County--1880-1900.; Hydraulic mining--Colorado--San Miguel County--1880-1900.; Mining--Colorado--San Miguel County--1880-1900.
View of a 16th (Sixteenth) Street parade in Denver, Colorado; shows soldiers marching in formation, the Tabor Opera House, the Arapahoe County Courthouse, and the Colorado State Capitol. People crowd the sidewalks; sign reads: "America Theater."
Denver (Colo.)--1910-1920.; Commercial streets--Colorado--Denver--1910-1920.; Military parades & ceremonies--Colorado--Denver--1910-1920.; Military personnel--Colorado--Denver--1910-1920.
View of retaining walls, landscaping, and Cherry Creek in Denver, Colorado. City Hall (with clock tower), the Larimer Street bridge, and Auraria Neighborhood apartment houses are in the background.
Cherry Creek (El Paso County-Denver County, Colo.)--1910-1920.; Denver (Colo.)--1910-1920.; Bridges--Colorado--Denver--1910-1920.; City & town halls--Colorado--Denver--1910-1920.; Erosion protection works--Colorado--Denver--1910-1920.; Retaining...
A man leans against a giant Sequoia in Mariposa Grove, Yosemite National Park, California; the Tunnel Tree (Wawona) is in the distance.
Tunnel Tree (Calif.)--1870-1900.; Yosemite National Park (Calif.)--1870-1900.; Giant sequoias--California--Yosemite National Park--1870-1900.; Tunnels--California--Yosemite National Park--1870-1900.
View of Lamartine, Clear Creek County, Colorado, looking up the hill on which the town was built; features row of stacked white stones, possibly a wall or the remains of a building foundation surrounded by a dense grove of trees; telephone or...
Index of the American Woodmen Insurance Ledger from 1901-1907. Index pertains to insurance policies bought by African Americans during that time frame. The index contains the following information: Name of the Insured, "Camp and State" of...
American Woodmen's Life Insurance Company.; Life insurance agents--Colorado--Denver.; Life insurance--Colorado--Denver.; African Americans--Colorado--Denver.
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,...