[Untitled photo, possibly related to: Gasoline truck driver getting ready to fill service stations tank with gasoline, San… https://www.rawpixel.com/image/12169389/image-art-vintage-public-domainFree Image from public domain licenseFreight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and Hammond, Indiana. As the train goes… https://www.rawpixel.com/image/12291081/photo-image-sky-public-domain-architectureFree Image from public domain license[Untitled photo, possibly related to: Warner Robins, Georgia. Air Service Command, Robins Field. Practicing picking up and… https://www.rawpixel.com/image/12296077/photo-image-plant-people-treeFree Image from public domain licenseAn American tank being loaded onto a railroad car enroute to Russia in the Middle East. Sourced from the Library of Congress. https://www.rawpixel.com/image/12293550/photo-image-public-domain-architecture-constructionFree Image from public domain license[Untitled photo, possibly related to: Wellington, Kansas. A huge naval gun bound for the West coast in the Atchison, Topeka… https://www.rawpixel.com/image/12293602/photo-image-sky-public-domain-gunFree Image from public domain licenseTank cars at oil field, Marion County, Illinois. Sourced from the Library of Congress. https://www.rawpixel.com/image/12252579/photo-image-sky-tree-public-domainFree Image from public domain licenseGrain elevator. Vincennes, Indiana. Sourced from the Library of Congress. https://www.rawpixel.com/image/12272257/photo-image-sky-public-domain-factoryFree Image from public domain licenseDawn, Texas. Wheat storage bins along the Atchison, Topeka, and Santa Fe Railroad between Amarillo, Texas and Clovis, New… https://www.rawpixel.com/image/12293378/photo-image-sky-road-public-domainFree Image from public domain licenseCouple Exercise Fitness Happiness Healthy Concept https://www.rawpixel.com/image/82996/premium-photo-image-older-couple-jogging-activity-bondingView licenseAn American tank being loaded onto a railroad car in the Middle East enroute to Russia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12294400/photo-image-person-sky-public-domainFree Image from public domain license[Untitled photo, possibly related to: Narrow gauge railway yards, train and water tank at Telluride, Colorado] by Russell Lee https://www.rawpixel.com/image/12150242/image-plant-art-skyFree Image from public domain licenseHolabird ordnance depot, Baltimore, Maryland. These rubber half-track treads cannot be recapped. Extreme care must therefore… https://www.rawpixel.com/image/12294265/photo-image-person-public-domain-architectureFree Image from public domain licenseFreight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and Hammond, Indiana. As the train goes… https://www.rawpixel.com/image/12291059/photo-image-public-domain-nature-architectureFree Image from public domain licenseBethlehem-Fairfield shipyards, Baltimore, Maryland. Box and tank cars. Sourced from the Library of Congress. https://www.rawpixel.com/image/12292814/photo-image-sky-public-domain-architectureFree Image from public domain licenseHarper, Kansas. Grain elevator along the Atchison, Topeka and Santa Fe Railroad between Wellington, Kansas and Waynoka… https://www.rawpixel.com/image/12291275/photo-image-sky-public-domain-factoryFree Image from public domain license[Untitled photo, possibly related to: Chicago, Illinois. Tank car going over the retarder at the south hump at an Illinois… https://www.rawpixel.com/image/12290520/photo-image-sky-smoke-public-domainFree Image from public domain license