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  • All fields: Tunnel)
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Display: 50

    • Moffat Tunnel. East Portal 1951

    • A railroad track for the Denver & Rio Grande Railroad runs from the foreground back to the East Portal of the Moffat Tunnel on Rollins Pass in Gilpin County, Colorado. A small group of tents is in the foreground. Pine trees stand along the...
    • Railroad tunnels--Colorado--Gilpin County--1950-1960.; Gilpin County (Colo.)--1950-1960.; Moffat Tunnel (Colo.)--1950-1960.; Tents--Colorado--Gilpin County--1950-1960.; Denver and Rio Grande Railroad Company.
    • [1951?]
    • Alva B. Adams Tunnel

    • View of the West Portal of the Continental Divide Tunnel (Alva Adams Tunnel), a part of the Colorado-Big Thompson Project, during construction on the east end of Grand Lake in Grand County, Colorado. The work was undertaken by the United States...
    • United States. Bureau of Reclamation--Facilities.; Water diversion--Colorado--Grand County--1930-1940.; Water tunnels--Colorado--Grand County--1930-1940.; Alva B. Adams Tunnel (Colo.)--1930-1940.; Grand County (Colo.)--1930-1940.;...
    • [between 1939 and 1940?]
    • Moffat Tunnel. East Portal 1951

    • A railroad track for the Denver & Rio Grande Railroad runs from the foreground back to the East Portal of the Moffat Tunnel on Rollins Pass in Gilpin County, Colorado. A small group of tents is in the foreground. Pine trees stand along the...
    • Railroad tunnels--Colorado--Gilpin County--1950-1960.; Gilpin County (Colo.)--1950-1960.; Tents--Colorado--Gilpin County--1950-1960.; Denver and Rio Grande Railroad Company.
    • [1951?]
    • Silverton

    • Reproduction of ink rendering; shows Silverton, San Juan County, Colorado, and: "1. Greene Co. Smelter 2. Anvil Mountain 3. Rough 'n Ready Smelter 4. Kendall Mountain 5. Las Animas River 6. Cement Creek 7. Town T- Call 8. Melville's Lightning...
    • Silverton (Colo.)--1870-1880.
    • [between 1870 and 1880?]
    • Moffat Tunnel- West Portal, Grand County, Colo.

    • View of the West Portal of the Moffat Tunnel located in Grand County, Colo. The tunnel officially opened on February 26, 1928 as part of the mainline route across Colorado for the Denver and Salt Lake Railroad. Above the entrance to the tunnel...
    • Railroad Tunnels--Colorado--Grand County--2000-2010.; Moffat Tunnel (Colo.)--2000-2010.; Grand County (Colo.)--2000-2010.; Denver and Salt Lake Railroad Company--Pictorial works.; Railroad tunnels--Colorado--Grand County--Pictorial works.; Moffat...
    • 2006
    • Colo. & Southern, Alpine Pass, office and depot at Alpine Tunnel, Colorado from tunnel (east)...

    • View east of the Western Union Telegraph and Cable Office, and depot at Alpine Tunnel, (11,545 feet), Gunnison County, Colorado shows the small dilapidated front gable clapboard structure, rooftop sign, "Alpine Tunnel," remains of a railroad signal...
    • Alpine Station (Colo. : Locale)--1930-1940.; Railroad stations--Colorado--Alpine Tunnel--1930-1940.; Railroad stations--Colorado--Gunnison County--1930-1940.; Telegraph offices--Colorado--Gunnison County--1930-1940.
    • 1939 August 6
    • West portal Continental Divide Tunnel

    • View of the entrance to the west portal of the Alva B. Adams Tunnel of the United States Reclamation Bureau Colorado Big Thompson Project water diversion tunnel in Grand County County, Colorado. A sign reads: "West Portal Continental Divide Tunnel,...
    • Colorado-Big Thompson Project (U.S.)--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Tunnels--Colorado--Grand County--1940-1950.
    • [between 1940 and 1947]
    • Holing through ceremonies

    • Men, a woman and a boy pose at a ceremony for the completion of the the pioneer bore, a tunnel (later a water tunnel) used in the construction of the Moffat Tunnel by the Moffat Tunnel Improvement District, in Grand County or Gilpin County,...
    • Moffat Tunnel (Colo.)--1920-1930.; Dedications--Colorado--1920-1930.; Tunnels--Colorado--1920-1930.; Workers--Colorado--1920-1930.
    • 1927 March 10
    • Moffat Railroad - East Portal

    • 26, 1928 when the first passenger train passed through it. (Moffat died in 1911 and thus never saw his dream become a reality.) The tunnel passed under James Peak and eliminated the 27-mile trip up the steep grade of Rollins Pass, effectively ...
    • Railroad tunnels--Colorado--Gilpin County--1950-1960.; Gilpin County (Colo.)--1950-1960.; Moffat Tunnel (Colo.)--1950-1960.; Passes (Landforms)--Colorado--1950-1960.; Railroads--Colorado--Gilpin County--1950-1960.; Tents--Colorado--Gilpin...
    • [1951?]
    • Municipal Facts: Volume 9 Numbers 3 and 4, 1926 March-April

    • Newsletter produced everty two months by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 19260300
    • Breast of Gold Standard Tunnel, Cripple Creek

    • Miners sit and stand at the entrance of the Gold Standard Tunnel in Cripple Creek, Teller County, Colorado. Two workers hold onto Mining equipment, possibly a pump or drill used to widen the tunnel opening.
    • Cripple Creek (Colo.)--1890-1910.; Gold Standard Group Mine (Teller County, Colo.)--1890-1910.; Gold mining--Colorado--Cripple Creek--1890-1910.; Miners--Colorado--Cripple Creek--1890-1910.; Mining--Colorado--Cripple Creek--1890-1910.
    • [between 1890 and 1910]
    • East Portal, Colo., site of Moffat Tunnel

    • Gable-roofed workers' residences and business buildings at the East Portal of the Moffat Tunnel in Colorado are on the north mountainside and in the valley of the approach to the tunnel. Train tracks run in front of the buildings and into the...
    • East Portal (Colo.)--1920-1930.; Moffat Tunnel--1920-1930.; Dormitories--Colorado--East Portal--1920-1930.; Tunnels--Colorado--East Portal--1920-1930.
    • 1926
    • Tunnel No. 10, 11 Mile Canon

    • View of a Colorado Midland Railway locomotive tender or caboose on narrow gauge tracks in a tunnel through a rock formation in Elevenmile Canyon (Park County), Colorado. Men, women and children pose near the tunnel opening and a sign that reads:...
    • Colorado Midland Railway Company--1880-1900.; Elevenmile Canyon (Colo.)--1880-1900.; Park County (Colo.)--1880-1900.; Railroads--Colorado--Park County--1880-1900.; Rock formations--Colorado--Park County--1880-1900.; Tunnels--Colorado--Park...
    • [between 1887 and 1900?]
    • Raton Tunnel,

    • View of an Atchison, Topeka and Santa Fe locomotive as it exits Raton Tunnel, near Wootton siding in Las Animas County, Colorado. Shows a mountain landscape and cattle.
    • Atchison, Topeka, and Santa Fe Railway Company--1900-1920.; Las Animas County (Colo.)--1900-1920.; Raton Pass (Colo. and N.M.)--1900-1920.; Passes--Colorado--Las Animas County--1900-1920.; Railroads--Colorado--Las Animas County--1900-1920.;...
    • [between 1908 and 1915?]
    • WPCD

    • Workers stand beside railroad tracks, tools and ladders inside the the west portal of the Alva B. Adams Tunnel of the United States Reclamation Bureau Colorado Big Thompson Project water diversion tunnel (west portal of the Continental Divide...
    • Colorado-Big Thompson Project (U.S.)--People--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.;...
    • [between 194 and 1947]
    • West Portal, Alpine Tunnel, Gunnison County, Colo.

    • View of the West Portal of the Alpine Tunnel in Gunnison County, Colo. Located above timberline near the town of Pitkin, the narrow gauge railroad tunnel was constructed in 1882 underneath the Continental Divide in order to connect to the town of...
    • Alpine Tunnel (Colo.)--1990-2000.; Railroad tunnels--Colorado--Gunnison County--1990-2000.; Gunnison County (Colo.)--1990-2000.; Alpine Tunnel (Colo.)--Pictorial works.; Railroad tunnels--Colorado--Gunnison County--Pictorial works.; Gunnison County...
    • 1990
    • Needle's Eye Tunnel, Boulder County, Colo.

    • View of Needle's Eye Tunnel located on the Continental Divide in Boulder County, Colo. near Rollins Pass a.k.a. Corona Pass. A part of the Moffat Road, it was built in the early 20th century by Daniel Moffat as part of the Denver, Northwestern...
    • Railroad Tunnels--Colorado--Boulder County--1970-1980.; Needle's Eye Tunnel (Boulder County, Colo.)--1970-1980.; Boulder County (Colo.)--1970-1980.; Denver, Northwestern, and Pacific Railway--Pictorial works.; Railroad tunnels--Colorado--Boulder...
    • 1974
    • Gem - Newhouse, Colorado

    • Interior view of the Newhouse tunnel, Clear Creek County, Colorado, shows two hand cars on tracks and heavily timbered tunnel walls. The Newhouse tunnel was the longest tunnel of its time, having being driven five miles from Idaho Springs to...
    • Clear Creek County (Colo.)--1900-1920.; Mine railroads--Cars--Colorado--Clear Creek County--1900-1920.; Interiors--Colorado--Clear Creek County--1900-1920.; Mining--Colorado--Clear Creek County--1900-1920.
    • [between 1900 and 1920?]
    • Colo. & Southern, Alpine Pass

    • View from slope above shows the dilapidated boarding house hotel, Western Union Telegraph and Cable office and depot, and stone enginehouse at Alpine Tunnel, (11,545 feet) Gunnison County, Colorado. Two-story boarding house, built by the Colorado...
    • Alpine Station (Colo. : Locale)--1930-1940.; Gunnison County (Colo.)--1930-1940.; Railroad stations--Colorado--Gunnison County--1930-1940.; Telegraph offices--Colorado--Gunnison County--1930-1940.
    • August 6, 1939
    • Moffat Tunnel

    • Smoke rises from a Denver & Salt Lake Railway Company locomotive at the entrance to the Moffat Tunnel at the west portal near Winter Park in Grand County, Colorado. Shows snow and icicles, the dates "1923" and "1927" carved on both sides of the...
    • Denver and Salt Lake Railway Company--1920-1930.; Railroad tunnels--Colorado--Grand County--1920-1930.; Grand County (Colo.)--1920-1930.; Moffat Tunnel (Colo.)--1920-1930.; Railroad locomotives--Colorado--Grand County--1920-1930.;...
    • [1928?]
    • Ceremonies at completion of Moffat Tunnel

    • People gather around a KOA radio broadcast microphone at a ceremony to celebrate the completion of the Moffat Tunnel at East Portal (Gilpin County), Colorado. An announcer holds a piece of paper and stands on a podium. Men wear suits and overcoats,...
    • Denver and Salt Lake Railway Company--1920-1930.; Railroad tunnels--Colorado--East Portal--1920-1930.; East Portal (Colo.)--1920-1930.; Moffat Tunnel (Colo.)--1920-1930.; Dedications--Colorado--East Portal--1920-1930.;...
    • [1928 February 26]
    • Proposed colossus to be carved above each portal entrance to Moffat Tunnel

    • Close-up view of a clay sculpture of a proposed Denver and Salt Lake Railway Company tunnel entrance to be built at both portals of the Moffat Tunnel. The figure of a nude man holds a torch in the air with one hand, and a model of probably the...
    • Moffat Tunnel (Colo.)--1920-1930.; Maquettes--1920-1930.; Models--1920-1930.
    • 1923, October, November or December
    • Mouth of Sutro tunnel

    • Men pose at the mouth of the Sutro Tunnel which is marked by an elaborate entryway, Virginia City, Nevada. The tunnel is nine miles long and was used to drain the mines on the Comstock lode. Painted on the entry: "Commenced October 19th, 1869,...
    • Sutro Tunnel (Nev.)--1870-1890.; Virginia City (Nev.)--1870-1890.; Miners--Nevada--Virginia City--1870-1890.; Mining--Nevada--Virginia City--1870-1890.; Tunnels--Nevada--Virginia City--1870-1890.
    • [between 1870 and 1890?]
    • East Portal, Moffat Tunnel

    • East Portal Moffat Tunnel, Denver & Salt Lake Railroad Tunnel through Continental Divide, Gilpin County, Colorado; shows tunnel entrance and ventilating plant, railroad tracks, power lines, two survey swaths cut over mountain in line with tunnel,...
    • Denver and Salt Lake Railway Company--1920-1930.; Railroad tunnels--Colorado--Gilpin County--1920-1930.; Gilpin County (Colo.)--1920-1930.; Moffat Tunnel (Colo.)--1920-1930.; Railroad tracks--Colorado--Gilpin County--1920-1930.
    • [1940-1949?]
    • East Portal residences, Moffat Tunnel

    • The East Portal of the Moffat Tunnel in Colorado is partly obscured by steam. Gable-roofed residences for the workers are on the north side of the approach to the tunnel; two sets of railroad tracks lead into the tunnel and people work around them....
    • East Portal (Colo.)--1920-1930.; Moffat Tunnel--1920-1930.; Dormitories--Colorado--East Portal--1920-1930.; Tunnels--Colorado--East Portal--1920-1930.
    • [1927?]
    • Alpine tunnel, Pacific slope

    • Men sit and pose on a Denver, South Park & Pacific railroad Engine, labeled "42", and passenger car on a stone embankment at the west portal of the tunnel near Alpine Station in the Sawatch Mountains (Gunnison County), Colorado. View shows a...
    • Denver, South Park, and Pacific Railroad Company--1880-1890.; Alpine Tunnel (Colo.)--1880-1890.; Gunnison County (Colo.)--1880-1890.; Railroads--Colorado--Gunnison County--1880-1890.; Tunnels--Colorado--Gunnison County--1880-1890.
    • [between 1880 and 1889?]
    • Colo. & Southern, Alpine Pass, view looking toward Alpine Tunnel station and hotel from west...

    • View looking west toward Alpine Tunnel station, (11,545 feet) Gunnison County, Colorado, includes abandoned railroad tracks, ruins of the hand-hewn stone engine house, two-story frame boarding house, railroad signal and telegraph office. Town was...
    • Alpine Station (Colo. : Locale)--1930-1940.; Railroad stations--Colorado--Alpine Tunnel--1930-1940.; Railroad stations--Colorado--Gunnison County--1930-1940.; Telegraph offices--Colorado--Gunnison County--1930-1940.
    • 1939 August 6
    • D. & S.L. Ry. locomotive in rock section of Moffat Tunnel during track laying

    • View of a Denver and Salt Lake Railway inspection locomotive in the Moffat Tunnel in Gilpin County, Colorado. Shows steam illuminated by electric lights in the tunnel. Shows rock walls in the tunnel.
    • Denver and Salt Lake Railway Company--1920-1930.; Gilpin County (Colo.)--1920-1930.; Railroad construction & maintenance--Colorado--Gilpin County--1920-1930.; Railroad locomotives--Colorado--Gilpin County--1920-1930.; Tunnels--Colorado--Gilpin...
    • [1928]
    • EPCD Portal

    • View of the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. Shows tracks, pipes, rocks and signs that read: "U.S. Department of Interior, Bureau of Reclamation,...
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Larimer County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Larimer County--1940-1950.; Tunnels--Colorado--Larimer County--1940-1950.
    • [between 1941 and 1951?]
    • WPCD locomotives in yard

    • View of the locomotive yard at the West Portal construction site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows men, mine locomotives, corrugated sheds, power station, a...
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Mine railroads--Colorado--Grand County--1940-1950.; Railroad locomotives--Colorado--Grand County--1940-1950.
    • [between 1940 and 1942?]
    • Film crew in West Portal

    • Men, actors or directors and railroad workers, are in the entrance of the Moffat Tunnel in Grand County, Colorado. The site was used as the set for the silent film "Trail of '98." A man, probably the director, wears a cap, tall boots, a suit and a...
    • Railroad tunnels--Colorado--Grand County--1920-1930.; Grand County (Colo.)--1920-1930.; Moffat Tunnel (Colo.)--1920-1930.; Hoisting machinery--Colorado--Grand County--1920-1930.; Motion picture industry--Colorado--Grand County--1920-1930.; Motion...
    • [1927]
    • W.P.C.D. mucking

    • Men load rubble onto ore cars in a tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. The men wear work overalls, hard hats, and electric mine lamps....
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Mine...
    • [between 1940 and 1950?]
    • Columbine tunnel

    • A miner stands in front of a wood building with a sign above the door that reads: "Columbine Tunnel", Cripple Creek District, Teller County, Colorado. A few yards away, built into the hill, is another entrance with a "Columbine Tunnel" sign and...
    • Columbine Tunnel (Mine : Teller County, Colo.)--1890-1910.; Teller County (Colo.)--1890-1910.; Miners--Colorado--Teller County--1890-1910.; Mining--Colorado--Teller County--1890-1910.; Tailings embankments--Colorado--Teller County--1890-1910.
    • [between 1890 and 1910?]
    • California Zephyr

    • View of a California Zephyr train on Denver and Rio Grande Western Railroad tracks at the east portal of the Moffat Tunnel in Gilpin County, Colorado. Passenger observation cars read: "Silver Bronco," "D.& R.G.W." and "C.B.& O." "Moffat Tunnel,...
    • Denver and Rio Grande Western Railroad Company--1940-1950.; Railroad tunnels--Colorado--Gilpin County--1940-1950.; Gilpin County (Colo.)--1940-1950.; Moffat Tunnel (Colo.)--1940-1950.; Railroad observation cars--Colorado--Gilpin County--1940-1950.;...
    • [1949?]
    • Loveland Pass tunnel, close up, eng. & transit

    • An engineer looks through a theodolite in the interior of a tunnel as he works on the proposed Loveland Pass tunnel project in Summit or Clear Creek County, Colorado. The man wears a heavy plaid wool jacket, hat, and glasses. Pipes run along the...
    • Interiors--Colorado--1940-1950.; Surveying--Colorado--1940-1950.; Surveyors--Colorado--1940-1950.; Tunnels--Colorado--1940-1950.
    • [between 1940 and 1950?]
    • Toltec tunnel D. & R.G.R.W.

    • Men wear hats, suits and overcoats and pose on or beside a Denver & Rio Grande Railway Company Engine on the first excursion on the San Juan Extension at the Toltec Tunnel in Rio Arriba County, New Mexico. Shows a tunnel entrance and a wooden...
    • Denver and Rio Grande Railway Company--1880-1890.; Rio Arriba County (N.M.)--1880-1890.; Men--New Mexico--Rio Arriba County--1880-1890.; Railroad locomotives--New Mexico--Rio Arriba County--1880-1890.; Tunnels--New Mexico--Rio Arriba...
    • [1880 October 4]
    • Baltimore Tunnel Silver Plume

    • View of the power plant and the entrance to the Baltimore Tunnel near Silver Plume (Clear Creek County), Colorado. A sign over the tunnel entrance reads: "Hazleton Consolidated M & T Co. Baltimore Tunnel".
    • Mine buildings--Colorado--Silver Plume--1880-1900.; Baltimore Mine (Silver Plume, Colo.)--1880-1900.; Silver Plume (Colo.)--1880-1900.; Mining--Colorado--Silver Plume--1880-1900.
    • [between 1880 and 1900]
    • Toltec tunnel, D & RGRW

    • Men sit or stand on a timber trestle beside what is identified as "Toltec tunnel", on narrow gauge Denver & Rio Grande Railway Company tracks in Rio Arriba County, New Mexico. Shows a tunnel entrance and steep rock walls beside the San Juan...
    • Denver and Rio Grande Railway Company--1880-1890.; Rio Arriba County (N.M.)--1880-1890.; Railroad bridges--New Mexico--Rio Arriba County--1880-1890.; Trestles--New Mexico--Rio Arriba County--1880-1890.; Tunnels--New Mexico--Rio Arriba...
    • [between 1880 and 1886?]
    • Carlton Tunnel

    • Men wear raincoats, rubber boots and hats with lamps pose inside the Carlton Tunnel (a mine drainage tunnel) in Teller County, Colorado. Shows pipes, water and interior tunnel walls.
    • Teller (Colo.)--1940-1960.; Men--Colorado--Teller--1940-1960.; Raincoats--1940-1960.; Tunnels--Colorado--Teller--1940-1960.
    • [between 1940 and 1960?]
    • Tunnel under construction, Park of the Red Rocks

    • View of a road tunnel under construction through a rock formation at Red Rocks Park near Morrison in Jefferson County, Colorado. Shows track and a mine car used to remove rock from the construction site. A man stands near the tracks. A ladder rests...
    • Denver Mountain Parks--1900-1920.; Jefferson County (Colo.)--1900-1920.; Red Rocks Park (Colo.)--1900-1920.; Construction--Colorado--Jefferson County--1900-1920.; Parks--Colorado--Jefferson County--1900-1920.; Rock formations--Colorado--Jefferson...
    • [between 1906 and 1914?]
    • Tunnel No. 29 from above, Moffat Road

    • Looking down on Denver, Northwestern & Pacific Railway's tunnel number Twenty-nine, Moffat Road, Colorado; push car used by L.C. McClure on standard gauge track winds along mountains and rock walls; wooden trestle, center foreground.
    • Railroad handcars--Colorado--1900-1910.; Trestles--Colorado--1900-1910.; Tunnels--Colorado--1900-1910.; Denver, Northwestern and Pacific Railway.
    • [1904?]
    • WPCD loaded face

    • View of a tunnel charged with dynamite at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.;...
    • [between 1940 and 1950?]
    • WPCD mucking left 3/4

    • A man loads rubble onto an ore car in a tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
    • [between 1940 and 1950?]
    • WPCD mucking right 3/4

    • Men load rubble onto ore cars in a tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
    • [between 1940 and 1950?]
    • WPCD mucking bucket spilling

    • Men work in a tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
    • Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
    • [between 1940 and 1950?]

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