https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955791Edit ImageSaveSaveEditCropCustom TextA bear wearing a spiked helmet and a gun is walking over a bridge marked "Protocol" which is supported by rulers of different countries. Drawing by M.C.P. , 12 July 1877.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1003 px | 300 dpiLarge JPEG 2905 x 2427 px | 300 dpiFree DownloadA bear wearing a spiked helmet and a gun is walking over a bridge marked "Protocol" which is supported by rulers of different countries. Drawing by M.C.P. , 12 July 1877.More