The famous radiograph made by Roentgen on December 22, 1895. This is
traditionally known as “the first X-ray picture” and “the radiograph of
Mrs. Roentgen’s hand.” However, it was not actually the first X-ray picture
(others exposed photographic plates to X rays previously, without knowing
the images’ significance), and was not labeled as Mrs. Roentgen’s hand
when it was first published