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  • All fields: dials
(26 results)



Display: 50

    • Electronics radio

    • Shows an early radio. The top is open to expose the radios components. Dials and tuning knobs are on the front face.
    • Radios--1890-1910.
    • [between 1890 and 1910]
    • Electronics instrument

    • Shows an electronic instrument with dials at the top, wires and metal cylinders.
    • Electronic apparatus & appliances--1890-1910.
    • [between 1890 and 1910]
    • Electronics instrument

    • Shows a boxed shaped electronic instrument with dials, a switch (?) and a light bulb.
    • Electronic apparatus & appliances--1890-1910.
    • [between 1890 and 1910]
    • Moffat Filter Plant

    • View through a window of equipment and scales at the Moffat Filter Plant in Lakewood (Jefferson County), Colorado. Shows scales, dials, and monitoring equipment in the room.
    • Moffat Filter Plant (Lakewood, Colo.)--Equipment & supplies--1930-1940.; Lakewood (Colo.)--1930-1940.; Equipment--Colorado--Lakewood--1930-1940.; Interiors--Colorado--Lakewood--1930-1940.; Waterworks--Colorado--Lakewood--1930-1940.;...
    • 1937 July 15
    • Electronic instrument

    • Shows an electronic instrument in a small latch box. The lid is open to expose dials and light bulbs.
    • Electronic apparatus & appliances--1890-1910.
    • [between 1890 and 1910]
    • Electronic instrument

    • Shows an electronic instrument in a small latch box. The lid is open to expose the dials and light bulbs.
    • Electronic apparatus & appliances--1890-1910.
    • [between 1890 and 1910]
    • Oldest radio fan

    • Katherine Steiger smiles and wears headphones; the elderly woman wears a polka-dot dress with a lace collar, glasses, and holds a newspaper: "The Enquirer - Radio Section." A radio receiver is on a table; lettering between dials reads: "Crosley...
    • Aged persons--1920-1930.; Interiors.; Radios--1920-1930.; Women--1920-1930.; Steiger, Katherine.
    •  
    • Fort Lewis, utility room

    • A man in overalls and boots poses beside dials and gauges in a utility room at Fort Lewis High School (later Fort Lewis College) in Hesperus (La Plata County), Colorado. Shows probably belt-driven power generators on cement blocks.
    • Fort Lewis High School (Hesperus, Colo.)--People--1910-1920.; Hesperus (Colo.)--1910-1920.; Electric generators--Colorado--Hesperus--1910-1920.; Employees--Colorado--Hesperus--1910-1920.; Schools--Colorado--Hesperus--1910-1920.
    • [between 1911 and 1913?]
    • So. Platte Drg. Co., control room

    • A worker operates the controls of the South Platte Dredging Company hydraulic placer gold mining dredge probably near Fairplay (Park County), Colorado. The man sits in the control room and holds a control lever in each hand. Other control levers...
    • South Platte Dredging Co.--Equipment & supplies--1930-1950.; Control rooms--Colorado--Fairplay--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.;...
    • [between 1930 and 1950?]
    • Electronic instrument

    • Shows an electronic instrument with dials, wires, coils, light bulbs and metal cylinders.
    • Electronic apparatus & appliances--1890-1910.
    • [between 1890 and 1910]
    • Operations room, Denver Police Department

    • A group of men in suits pose in a operations room at the Denver Police Department in Denver, Colorado. An operator sits behind a desk where roles of ticker tape and telegraph machines are arranged. Electrical switches, dials, and light bulbs are...
    • Denver (Colo.)--1900-1920.; Interiors--Colorado--Denver--1900-1920.; Offices--Colorado--Denver--1900-1920.; Police stations--Colorado--Denver--1900-1920.; Police--Colorado--Denver--1900-1920.
    • [between 1908 and 1915?]
    • So. Platte Drg. Co.

    • View of a control room with levers, switches, and dials on the South Platte Dredging Company hydraulic placer gold mining dredge probably near Fairplay (Park County), Colorado.
    • South Platte Dredging Co.--Equipment & supplies--1930-1950.; Control rooms--Colorado--Fairplay--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.;...
    • [between 1930 and 1950?]
    • Denver Municipal Facts: Volume 4 Number 10, 1912 March 9

    • Newsletter produced 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.
    • 19120309
    • Local test desk - Colorado Springs Exchange equipment

    • Interior view of a Mountain States Telephone and Telegraph Company office in Colorado Springs (El Paso County), Colorado; shows telephones, microphones, switches, dials, and a road map of Colorado.
    • Mountain States Telephone and Telegraph Company--Equipment & supplies--1910-1920.; Colorado Springs (Colo.)--1910-1920.; Interiors--Colorado Springs--Denver--1910-1920.; Offices--Colorado--Colorado Springs--1910-1920.; Telephone...
    • 1914
    • Engine room, Colo. School of Mines

    • Interior view of the machinery room at the Colorado School of Mines in Golden (Jefferson County), Colorado. Shows a brick room with steel beams, and round, arched and oblong windows. Machinery powered by steam motors, pulleys, belts, wheels,...
    • Colorado School of Mines--Facilities--1910-1920.; Golden (Colo.)--1910-1920.; Interiors--Colorado--Golden--1910-1920.; Machinery--Colorado--Golden--1910-1920.; Mechanical systems--Colorado--Golden--1910-1920.; Universities &...
    • [between 1915 and 1920?]
    • Engine room, Colo. State School of Mines

    • Interior view of a machinery room at the Colorado School of Mines in Golden (Jefferson County), Colorado. Shows a brick room with steel beams, and round, arched and oblong windows. Machinery powered by steam motors, pulleys, wheels, belts, gauges,...
    • Colorado School of Mines--Facilities--1910-1920.; Golden (Colo.)--1910-1920.; Interiors--Colorado--Golden--1910-1920.; Machinery--Colorado--Golden--1910-1920.; Mechanical systems--Colorado--Golden--1910-1920.; Universities &...
    • [between 1915 and 1920?]
    • Denver Municipal Facts: Volume 3 Number 10, 1911 March 4

    • Newsletter produced 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.
    • 19110304
    • Huskie Highlights: 1972

    • Yearbook for Douglas County High School, located in Castle Rock, Colorado, for the year 1972.
    • Douglas County High School (Castle Rock, Colo.)--Students--Yearbooks.; Douglas County History Research Center (Castle Rock, Colo.); School yearbooks--Colorado--Douglas County.; High schools--Colorado--Douglas County--Periodicals.
    • 1972
    • West Virginia Mining Accidents : 1887 - 1927

    • Index of mining accidents in West Virginia between the years 1887 and 1927 respectively. Index is an alphabetical list by miner’s name for fatal and non-fatal mine accidents.
    • Mine accidents--West Virginia--Indexes.
    • 2007 March
    • Brief histories of the Denver Public Schools

    • Compiled for the administrative offices of the Denver Public Schools, this book contains brief histories for the majority of the Public Schools in Denver, Colorado up to they year 1952.
    • Denver Public Schools--History.
    • 1952

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