A photovoltaic roof installation filling the entire roof. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339454/free-photo-image-solar-panel-environmentalFree Image from public domain licenseNiedervisse village. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339450/free-photo-image-eco-sustainable-wind-powerFree Image from public domain licenseWind turbine silhouettes at sunset against an orange and red sky in Belgium. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3286861/free-photo-image-dawn-alternative-energy-cc0Free Image from public domain licenseSolar panels on a roof. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339452/free-photo-image-solar-energy-photovoltaic-environmentalFree Image from public domain licenseU.S. Secretary of Agriculture Sonny Perdue has breakfast with students and faculty at Michigan State University’s… https://www.rawpixel.com/image/3306141/free-photo-image-drone-agriculture-technologyFree Image from public domain license[Untitled photo, possibly related to: Power lines along highway in Dawson County, Texas] by Russell Lee https://www.rawpixel.com/image/12108936/image-cloud-plant-artFree Image from public domain licenseWind turbines at a wind farm. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339441/free-photo-image-sustainable-air-pollution-alternative-energyFree Image from public domain licenseWhite wind turbine on gray desert under blue and white sky. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283571/free-photo-image-wind-power-engine-green-energyFree Image from public domain licenseTelephone used for communication between various points in the mine. Mill and office, gold mine at Mogollon, New Mexico by… https://www.rawpixel.com/image/12108088/image-art-vintage-goldFree Image from public domain licenseHarvesting wheat in the Palo Verde Valley, 200 yards from the Colorado River, May 1972. Photographer: O'Rear, Charles.… https://www.rawpixel.com/image/8765873/photo-image-vintage-person-technologyFree Image from public domain licenseA wind farm on snowy hills in Greece. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285560/free-photo-image-cc0-creative-commonsFree Image from public domain licenseField of cattail with pivot irrigation and micro-sprinkler. Original public domain image from Flickr https://www.rawpixel.com/image/8731931/photo-image-plant-public-domain-technologyFree Image from public domain licenseAgriculture technology device, farming operation. Original public domain image from Flickr https://www.rawpixel.com/image/8732119/photo-image-public-domain-person-technologyFree Image from public domain licenseLandscape photography of transmission tower. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286682/free-photo-image-electric-cable-cc0Free Image from public domain licenseAgriculture: (above) a haymaking machine driven by a horse (five figures); (below) a hand-operated threshing machine.… https://www.rawpixel.com/image/13969289/image-paper-horses-cartoonFree Image from public domain licenseTractor planting soybean seeds. Original public domain image from Flickr https://www.rawpixel.com/image/8732054/photo-image-plant-public-domain-personFree Image from public domain licenseTractor planting soybean seeds. Original public domain image from Flickr https://www.rawpixel.com/image/8732051/photo-image-public-domain-technology-natureFree Image from public domain licenseWashington, D.C. An art class at Woodrow Wilson High School. Sourced from the Library of Congress. https://www.rawpixel.com/image/12241537/photo-image-face-paper-personFree Image from public domain licenseWomen in industry. Aircraft motor workers. A million dollar baby, not in terms of money but in her value to Uncle Sam… https://www.rawpixel.com/image/12239840/photo-image-plant-person-technologyFree Image from public domain licenseDawn and some wind turbines. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339438/free-photo-image-environmental-wind-turbine-sea-air-pollutionFree Image from public domain licenseMemorabilia from a Mainstreet. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/433778/free-photo-image-windmill-black-and-white-carol-highsmithFree Image from public domain licenseDetail of interior of home of rehabilitation borrower in Kimble County, Texas by Russell Lee https://www.rawpixel.com/image/12109081/image-art-vintage-phoneFree Image from public domain licenseTelephone linesmen raising wires to keep them above the flood level. Near Cache, Illinois by Russell Lee https://www.rawpixel.com/image/12108942/image-plant-person-artFree Image from public domain licenseWashington, D.C. Jewal Mazique [i.e. Jewel], worker at the Library of Congress, with her young niece whom she is raising and… https://www.rawpixel.com/image/12240462/photo-image-frame-person-bookFree Image from public domain licenseV-mail. V-mail is inspected for flaws on an enlarging "reader" at the Pentagon building, Washington, D.C. V-mail is… https://www.rawpixel.com/image/12239905/photo-image-face-person-spaceFree Image from public domain license[Untitled photo, possibly related to: At the Mary-Leila cotton mill in Greensboro, Georgia]. Sourced from the Library of… https://www.rawpixel.com/image/12240068/photo-image-face-person-artFree Image from public domain licenseU.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of… https://www.rawpixel.com/image/12241339/photo-image-person-technology-public-domainFree Image from public domain licenseProduction. Machine guns of various calibers. Agnes Mahan, bench lathe operator at a large Eastern firearms plant, makes oil… https://www.rawpixel.com/image/12241163/photo-image-face-plant-handFree Image from public domain licenseWendy Fauque of Fauque Farms powers on electric fence for established grazing area. Toole County, Montana. June 2020.… https://www.rawpixel.com/image/3336061/free-photo-image-electric-fence-animal-archeryFree Image from public domain licenseNew York, New York. Composing room of the New York Times newspaper. Linotyper's hands. Sourced from the Library of Congress. https://www.rawpixel.com/image/12241279/photo-image-hand-person-technologyFree Image from public domain licenseMr. Cary Williams, editor of the Greene County newspaper the "Greensboro Herald Journal." Greensboro, Georgia. Sourced from… https://www.rawpixel.com/image/12240012/photo-image-face-person-technologyFree Image from public domain licenseWomen in war. Supercharger plant workers. Plant foremen point to 20-year-old Annie Tabor as one of their best lathe… https://www.rawpixel.com/image/12239872/photo-image-plant-person-technologyFree Image from public domain licenseAn old slot machine in an abandoned saloon at Mansfield, Michigan by Russell Lee https://www.rawpixel.com/image/12108927/image-art-vintage-technologyFree Image from public domain licenseInterior of cooperative garment factory at Jersey Homesteads, showing some of the eighty homesteaders at their work and some… https://www.rawpixel.com/image/12108048/image-people-art-vintageFree Image from public domain licenseNew York, New York. Wire room of the New York Times newspaper. Copy boy about to tear off dispatch coming over Associated… https://www.rawpixel.com/image/12299934/image-paper-hand-personFree Image from public domain licenseWind turbines. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339440/free-photo-image-air-pollution-alternative-energy-cleanFree Image from public domain licenseAgriculture technology device, farming operation. Original public domain image from Flickr https://www.rawpixel.com/image/8732174/photo-image-phone-public-domain-personFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Installing electric wiring in a fuselage. Sourced from the Library of… https://www.rawpixel.com/image/12240234/photo-image-face-hand-personFree Image from public domain licenseA poster comes to life. Searching for just the right faces to use for a war poster, an Office of War Information (OWI)… https://www.rawpixel.com/image/12239925/photo-image-face-paper-handFree Image from public domain licenseCoast Guard Auxiliary. Guardians of inland waters. The Marblehead unit of the Coast Guard Auxiliary includes among its… https://www.rawpixel.com/image/12241182/photo-image-face-person-skyFree Image from public domain license[Untitled photo, possibly related to: Mr. McCutchins, editor of the News and Banner, office, Franklin, Heard County… https://www.rawpixel.com/image/12240002/photo-image-face-hand-personFree Image from public domain licenseCombine harvester and a tractor with a grain cart are equipped with an autonomous control system by Raven Industries who are… https://www.rawpixel.com/image/9647957/photo-image-boom-public-domain-natureFree Image from public domain license[Untitled photo, possibly related to: The Bessemers "blooming" at the Jones and Laughlin Steel Company in Aliquippa… https://www.rawpixel.com/image/12239762/photo-image-sky-smoke-lightFree Image from public domain licenseNurse training. Highlighting a day of intensive training, mail from home brings a smile to this young student nurse's face.… https://www.rawpixel.com/image/12239844/photo-image-face-person-technologyFree Image from public domain licenseNew York, New York. Composing room of the New York Times newspaper. Linotype operators. Sourced from the Library of Congress. https://www.rawpixel.com/image/12241526/photo-image-person-technology-public-domainFree Image from public domain licenseU.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of… https://www.rawpixel.com/image/12241543/photo-image-face-person-shirtFree Image from public domain licenseNew York, New York. Telegraph room of the New York Times newspaper. Telegrapher on the direct wire from Washington, D.C..… https://www.rawpixel.com/image/12241316/photo-image-face-hand-personFree Image from public domain licenseMr. Cary Williams, editor of the Greene County newspaper the "Greensboro Herald Journal." Greensboro, Georgia. Sourced from… https://www.rawpixel.com/image/12241199/photo-image-face-paper-personFree Image from public domain licenseA track for an Army halftrac car nears completion as curing plates nuts are removed with an air pressure wrench on the… https://www.rawpixel.com/image/12239929/photo-image-plant-person-artFree Image from public domain licenseAt the Mary-Leila cotton mill in Greensboro, Georgia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12240066/photo-image-person-technology-public-domainFree Image from public domain license[Untitled photo, possibly related to: Arlington, Virginia. The main lounge at the Idaho Hall, Arlington Farms, a residence… https://www.rawpixel.com/image/12241501/photo-image-face-person-artFree Image from public domain licenseProduction. Halftrac armoured cars. Setting machine screws in the body of an armoured halftrac scout car under construction… https://www.rawpixel.com/image/12239894/photo-image-face-plant-handFree Image from public domain licenseProduction. Airplane propellers. Final assembly of blades into a two-way controllable Hamilton propeller for one of… https://www.rawpixel.com/image/12239750/photo-image-plant-person-airplaneFree Image from public domain licenseChicago, Illinois. A worker in the Chicago and Northwestern Railroad locomotive repair shops. Sourced from the Library of… https://www.rawpixel.com/image/12240209/photo-image-face-person-technologyFree Image from public domain licensePassengers aboard an American airliner enroute from Washington to Los Angeles. Sourced from the Library of Congress. https://www.rawpixel.com/image/12240230/photo-image-face-people-technologyFree Image from public domain licenseNew York, New York. Drama department of the New York Times newspaper. Brooks Atkinson, drama critic, longhanding the review… https://www.rawpixel.com/image/12241302/photo-image-face-paper-peopleFree Image from public domain licenseRotary saw for sawing iron and steel. Gichner Iron Works, Washington, D.C.. Sourced from the Library of Congress. https://www.rawpixel.com/image/12239365/photo-image-person-technology-factoryFree Image from public domain licenseTechnological advances have made small, unmanned aircraft systems (sUAS or drones) less expensive and more powerful. As a… https://www.rawpixel.com/image/10995823/photo-image-public-domain-farm-droneFree Image from public domain licenseChicago, Illinois. Working on a locomotive at the Chicago and Northwestern Railroad shops. Sourced from the Library of… https://www.rawpixel.com/image/12240186/photo-image-person-airplane-technologyFree Image from public domain licenseWashington, D.C. Walter Spangenberg, a student at Woodrow Wilson High School, doing his school work at home. Sourced from… https://www.rawpixel.com/image/12241525/photo-image-face-paper-personFree Image from public domain licenseThe chassis of an Army halftrac scout car get a workout. When this test driver at a large Midwest plant has put the machine… https://www.rawpixel.com/image/12239691/photo-image-face-plant-personFree Image from public domain licenseWashington, D.C. Telephone operators at the telegraph office. Sourced from the Library of Congress. https://www.rawpixel.com/image/12241291/photo-image-face-person-technologyFree Image from public domain licenseProduction. Fifty-foot steel ramp boats. Mounting the power plant of a fifty-foot steel ramp boat in a Southern boatyard.… https://www.rawpixel.com/image/12239867/photo-image-plant-person-technologyFree Image from public domain licenseApproaching on a preprogrammed course, the driver-less Case IH Trident 5550 applicator with Raven Autonomy technology is the… https://www.rawpixel.com/image/9647959/photo-image-boom-public-domain-natureFree Image from public domain license[Untitled photo, possibly related to: At the Mary-Leila cotton mill in Greensboro, Georgia]. Sourced from the Library of… https://www.rawpixel.com/image/12240074/photo-image-hand-person-artFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Riveting a fuselage on a sub-assembly line. Sourced from the Library of… https://www.rawpixel.com/image/12240191/photo-image-face-person-technologyFree Image from public domain license[Untitled photo, possibly related to: Chicago, Illinois. A retarder operator at the south hump at an Illinois Central… https://www.rawpixel.com/image/12240231/photo-image-person-technology-public-domainFree Image from public domain licenseNew York, New York. Art department of the New York Times newspaper. Photo retoucher touching up a fashion photograph for… https://www.rawpixel.com/image/12241532/photo-image-face-paper-personFree Image from public domain licenseWashington, D.C. Preparing an advisory forecast at the U.S. Weather Bureau. General view of plotting room. Sourced from the… https://www.rawpixel.com/image/12241306/photo-image-face-paper-personFree Image from public domain licenseChildren studying in a Hebrew school in Colchester, Connecticut. Sourced from the Library of Congress. https://www.rawpixel.com/image/12239786/photo-image-paper-people-artFree Image from public domain license