Eugen Sandow: Life of the Author as told in Photographs. (Left) Fine picture-study of the Author, about 19, and (Right) a year later at 20.

Licence: In copyright

Credit: Eugen Sandow: Life of the Author as told in Photographs. (Left) Fine picture-study of the Author, about 19, and (Right) a year later at 20. Wellcome Collection. Source: Wellcome Collection.