https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13996578Edit ImageSaveSaveEditCropCustom TextBlackwell's Island Penitentiary, New York: prisoners in uniform are marching towards the penitentiary after hard labour outside, supervised by armed guards. Wood engraving after G.U. Régamey.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 867 px | 300 dpiLarge JPEG 3231 x 2335 px | 300 dpiFree DownloadBlackwell's Island Penitentiary, New York: prisoners in uniform are marching towards the penitentiary after hard labour outside, supervised by armed guards. Wood engraving after G.U. Régamey.More