https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13969086
The Pasteur Institute Hospital, Kasauli, India: Indian patients receiving their daily financial allowance for food; an illiterate patient (right) has his thumb inked to provide a thumb-print receipt. Photograph, ca. 1910.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use