https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13971415
A man visiting a health resort is covered with a sheet and lying on a wooden daybed, two men covered with sheets are standing before him; in the background a man with a sheet on his shoulders is filling up a glass with water. Etching, May 1870.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use