General Post-Office, Army of the Potomac, Brandy Station, Virginia by Timothy H O Sullivan and Alexander Gardner https://www.rawpixel.com/image/14325914/image-face-person-forestFree Image from public domain licenseThe Exchange, or Old Post-Office - Charleston, S.C. by George N Barnard https://www.rawpixel.com/image/14287066/the-exchange-old-post-office-charleston-sc-george-barnardFree Image from public domain license[Untitled photo, possibly related to: Post office at Irwinville, abandoned county seat of Irwin County, Georgia]. Sourced… https://www.rawpixel.com/image/12268471/photo-image-dog-animal-public-domainFree Image from public domain license