Union prisoner envelope (Oct. 26, 1864) vintage postage. Original public domain image from Smithsonian. Digitally enhanced… https://www.rawpixel.com/image/9745274/image-wallpaper-background-desktopFree Image from public domain licenseBank note, vintage money. Remixed by rawpixel. https://www.rawpixel.com/image/10173808/bank-note-vintage-money-remixed-rawpixelView license