https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13959580Edit ImageSaveSaveEditCropCustom TextSecond International Congress of Dermatology, Vienna. Photograph by Dr Székely, 1892.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 940 px | 300 dpiLarge JPEG 3069 x 2405 px | 300 dpiFree DownloadSecond International Congress of Dermatology, Vienna. Photograph by Dr Székely, 1892.More