https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14019264Edit ImageSaveSaveEditCropCustom TextArchitecture: two designs for door knockers. Wood engraving, 1849.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1016 px | 300 dpiLarge JPEG 2953 x 2501 px | 300 dpiFree DownloadArchitecture: two designs for door knockers. Wood engraving, 1849.More