https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14020102Edit ImageSaveSaveEditCropCustom TextArchitecture: two designs for door knockers. Wood engraving by C. D. Laing after W. H. Rogers, 1850.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 917 px | 300 dpiLarge JPEG 3070 x 2347 px | 300 dpiFree DownloadArchitecture: two designs for door knockers. Wood engraving by C. D. Laing after W. H. Rogers, 1850.More