[Untitled photo, possibly related to: Chicago, Illinois. Southbound freight train leaving an Illinois Central Railroad… https://www.rawpixel.com/image/12290818/photo-image-cloud-person-skyFree Image from public domain licenseElectric Car Ecology Technology Save Energy Concept https://www.rawpixel.com/image/1091436/image-rawpixelcomView licenseCurtis, Oklahoma. Helper engine leaving the train on Atchison, Topeka, and Santa Fe Railroad. Sourced from the Library of… https://www.rawpixel.com/image/12290399/photo-image-cloud-sky-smokeFree Image from public domain licenseCity dump. Dubuque, Iowa. In the background are shacks occupied by men who salvage anything marketable they can find in the… https://www.rawpixel.com/image/12283102/photo-image-background-person-skyFree Image from public domain licenseChemical Contamination Infection Pollution Concept https://www.rawpixel.com/image/286274/image-rawpixelcomView license[Untitled photo, possibly related to: Loading grain boat. Duluth, Minnesota]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12285261/photo-image-sky-smoke-public-domainFree Image from public domain license[Untitled photo, possibly related to: Streator (vicinity), Illinois. Passing an eastbound freight train on the Atchison… https://www.rawpixel.com/image/12289864/photo-image-cloud-sky-smokeFree Image from public domain licenseEco Car Electrical Energy Fuel Hybrid Innovation Plug Concept https://www.rawpixel.com/image/641676/free-image-rawpixelView licenseElectric Car Ecology Technology Save Energy Concept https://www.rawpixel.com/image/926860/free-image-rawpixelcomView licenseElectric Car Ecology Technology Save Energy Concept https://www.rawpixel.com/image/1091239/image-rawpixelcomView licenseLoading lake boat with iron ore. Allouez, Wisconsin. Sourced from the Library of Congress. https://www.rawpixel.com/image/12284855/photo-image-person-smoke-public-domainFree Image from public domain licenseElectric Car Ecology Technology Save Energy Concept https://www.rawpixel.com/image/1048161/free-image-rawpixelcomView licenseCarloads of iron ore at Mahoning pit. Hibbing, Minnesota. Sourced from the Library of Congress. https://www.rawpixel.com/image/12285057/photo-image-sky-smoke-public-domainFree Image from public domain licenseEV car icon for business in simple line https://www.rawpixel.com/image/2899709/premium-illustration-image-alternative-automobile-carView licenseBicycle icon for business in simple line https://www.rawpixel.com/image/2899577/premium-illustration-image-minimal-bike-alternative-bicycleView licenseChicago, Illinois. Engines lined up at coaling station at an Illinois Central Railroad yard. Sourced from the Library of… https://www.rawpixel.com/image/12290875/photo-image-steam-smoke-public-domainFree Image from public domain licenseBicycle icon for business in flat graphic https://www.rawpixel.com/image/3012590/premium-illustration-image-transportation-sustainability-alternative-bicycleView license[Untitled photo, possibly related to: Main street in Woodville, Greene County, Georgia]. Sourced from the Library of… https://www.rawpixel.com/image/12278763/photo-image-cloud-person-skyFree Image from public domain licenseRed Hybrid car. https://www.rawpixel.com/image/635168/image-rawpixelcomView licenseEnsenada, Puerto Rico. Sugar mill or "central" of the South Puerto Rico Sugar Company. Sourced from the Library of Congress. https://www.rawpixel.com/image/12280081/photo-image-sky-smoke-public-domainFree Image from public domain licenseWest Mine, West Frankfort, Illinois. Now abandoned. This mine has been down about a year (see 26940-D). Sourced from the… https://www.rawpixel.com/image/12272613/photo-image-person-sky-smokeFree Image from public domain license[Untitled photo, possibly related to: A freighter pulling into New York Harbor]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12264375/photo-image-sky-smoke-animalFree Image from public domain license