Washington, D.C. Couples dancing at the Uline Arena. Sourced from the Library of Congress. https://www.rawpixel.com/image/12323667/image-person-public-domain-womanFree Image from public domain licenseGrain elevators and freight cars. Minneapolis, Minnesota. Sourced from the Library of Congress. https://www.rawpixel.com/image/12282520/photo-image-person-pattern-public-domainFree Image from public domain license