Chicago, Illinois. Locomotives lined up for coal, sand and water at the coaling station in the yard of the Chicago and… https://www.rawpixel.com/image/12301217/image-steam-person-smokeFree Image from public domain licenseBusiness partners holding technology signs https://www.rawpixel.com/image/426468/premium-photo-image-browser-browsing-communicationView license[Untitled photo, possibly related to: Pittsburgh, Pennsylvania. Mechanic working on a bus engine at the garage]. 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https://www.rawpixel.com/image/146097/premium-photo-image-aerial-view-african-descent-architectView licenseChicago, Illinois. 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Helper engine leaving the train on Atchison, Topeka, and Santa Fe Railroad. 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