Businessman in black suit loosening his tie. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285100/free-photo-image-man-business-lawFree Image from public domain licenseLaunching the Quistconck, first completed at Hog Island shipyards. The President and Mrs. Wilson are standing on the… https://www.rawpixel.com/image/8799377/photo-image-plant-vintage-public-domainFree Image from public domain licenseU.S. Congress. Joint Committee to Investigate Dirigible Disasters, ca. 1933. Original public domain image from Flickr https://www.rawpixel.com/image/8799428/photo-image-vintage-public-domain-travelFree Image from public domain licenseGeometric shape corporate background, free public domain CC0 photo. https://www.rawpixel.com/image/5916277/photo-image-background-public-domain-shapeFree Image from public domain licenseCorporal treating two wounded Marines on the beach during the World War 2. Headquarters Number 83573. Original public domain… https://www.rawpixel.com/image/3393829/free-photo-image-trench-apparel-armoredFree Image from public domain licenseRiveter at Lockheed Aircraft Corporation, Burbank, California, 1940-1945. Original public domain image from Flickr https://www.rawpixel.com/image/8769921/photo-image-vintage-airplane-lightningFree Image from public domain licenseMassive machinery at work in the open-pit Wyodak coal mine in the coal-rich Powder River Basin outside Gillette, Wyoming.… https://www.rawpixel.com/image/434361/free-photo-image-mining-public-domain-trains-carol-highsmithFree Image from public domain licenseSkyscrapers in New York. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303091/free-photo-image-apartment-building-architecture-banisterFree Image from public domain licenseFarm Security Administration Casa Grande project, Arizona. Large-scale corporate farming by sixty-two families who divide… https://www.rawpixel.com/image/12107562/image-people-art-skyFree Image from public domain licenseA corporal in the Army takes his girl to dinner. Bakersfield, California by Russell Lee https://www.rawpixel.com/image/12109289/image-face-person-artFree Image from public domain licenseTaking a temperature reading in the foundry at the Farrell-Birmingham Corporation. Ansonia, Connecticut. Sourced from the… https://www.rawpixel.com/image/12240082/photo-image-face-hand-personFree Image from public domain licenseUnused block of four "Penny Black" postage stamps of Queen Victoria https://www.rawpixel.com/image/12850709/unused-block-four-penny-black-postage-stamps-queen-victoriaFree Image from public domain license[Untitled photo, possibly related to: Washington's more healthy children, Washington, D.C. Living at an apartment owned by… https://www.rawpixel.com/image/12301442/image-shadow-plant-personFree Image from public domain license[Untitled photo, possibly related to: Detroit, Michigan. Fashion show presented by the Chrysler Girls' Club of the Chrysler… https://www.rawpixel.com/image/12338238/image-person-art-public-domainFree Image from public domain licenseSan Diego, California. Cars parked outside Consolidated Aircraft Corporation by Russell Lee https://www.rawpixel.com/image/12109962/image-art-sky-vintageFree Image from public domain licenseThe electric furnace in the foundry at the Farrell-Birmingham Corporation. Ansonia, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12326117/image-person-fire-smokeFree Image from public domain license[Untitled photo, possibly related to: Washington's more healthy children, Washington, D.C. Living at an apartment owned by… https://www.rawpixel.com/image/12308277/image-face-person-public-domainFree Image from public domain licenseRichmond, California. Permanente Metals Corporation, shipbuilding division, yard number two. Pietro Cressano worked at the… https://www.rawpixel.com/image/12338009/image-face-hand-personFree Image from public domain licenseManuel Malero, President of the Delacroix Island Corporation, and his nephew examining and grading muskrats at fur auction… https://www.rawpixel.com/image/12247336/photo-image-person-public-domain-blackFree Image from public domain license[Untitled photo, possibly related to: Washington's more healthy children, Washington, D.C. Living at an apartment owned by… https://www.rawpixel.com/image/12308669/image-background-pattern-technologyFree Image from public domain license[Untitled photo, possibly related to: Washington's more healthy children, Washington, D.C. Living at an apartment owned by… https://www.rawpixel.com/image/12308466/image-shadow-plant-personFree Image from public domain licenseHarvesting sugarcane, United States Sugar Corporation, Clewiston, Florida. Sourced from the Library of Congress. https://www.rawpixel.com/image/12242934/photo-image-plant-person-grassFree Image from public domain licenseFilling molds from a ladle in the foundry of the Farrell-Birmingham Corporation. Ansonia, Connecticut. Sourced from the… https://www.rawpixel.com/image/12325792/image-person-public-domain-womanFree Image from public domain license[Untitled photo, possibly related to: Myrtle Beach, South Carolina. Air Service Command. Corporal Paul Wenger, instrument… https://www.rawpixel.com/image/12337301/image-face-person-shirtFree Image from public domain licenseWashington's more healthy children, Washington, D.C. Living at an apartment owned by Washington Sanitary Housing… https://www.rawpixel.com/image/12308244/image-face-person-public-domainFree Image from public domain licenseDetroit, Michigan. Fashion show presented by the Chrysler Girls' Club of the Chrysler Corporation at the Saks Fifth Avenue… https://www.rawpixel.com/image/12291718/photo-image-face-frame-personFree Image from public domain licenseFinished propellers being given a final inspection at the Hamilton Standard Propeller Corporation. East Hartford… https://www.rawpixel.com/image/12279256/photo-image-person-public-domain-womanFree Image from public domain licenseMr. and Mrs. Leo Longamore, formerly from the Pine Camp expansion area, now living on a New York defense relocation… https://www.rawpixel.com/image/12279988/photo-image-face-plant-peopleFree Image from public domain license[Untitled photo, possibly related to: Workmen leaving the plant at Vought Sikorsky Aircraft Corporation. 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