https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13958095Edit ImageSaveSaveEditCropCustom TextA large flying machine with sails and propellers is travelling over a town. Colour lithograph by W.L. Walton.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1104 px | 300 dpiLarge JPEG 2763 x 2543 px | 300 dpiFree DownloadA large flying machine with sails and propellers is travelling over a town. Colour lithograph by W.L. Walton.More