Jack London
Genthe, Arnold (1869-1942) "London, Jack, portrait photograph" c. 1906-1916. Library of Congress Genthe Collection. Reproduction #: LC-G3999-049-E hosted at [loc.gov]

Genthe photograph collection: "No known restrictions. The photographs Arnold Genthe made for his own use are considered to be in the public domain. Other photographs (generally studio portraits in the collection) could have been produced as "work for hire" and, if that were the arrangement, copyright may be held by the original client (Works made for hire are under copyright for 95 years from publication or 120 years from creation, whichever is shorter.)"