https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/9739658Edit ImageSaveSaveEditCropCustom TextAirmail poster, chromolithograph art. Original public domain image from Smithsonian. Digitally enhanced by rawpixel.Original public domain image from SmithsonianMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 951 x 1200 px | 300 dpiLarge JPEG 2773 x 3500 px | 300 dpiBest Quality JPEG 9626 x 12151 px | 300 dpiTIFF 9626 x 12151 px | 300 dpi | 669.32 MBFree DownloadAirmail poster, chromolithograph art. Original public domain image from Smithsonian. Digitally enhanced by rawpixel.More