Credit: Arnold Genthe, circa 1906-1916 (Arnold Genthe Collection,LoC Prints and Photographs Division, LC-G4085- 0411) (primary picture)	cultura.panorama.it	Courtesy of the NYPL Digital Gallery (image use requires permission from the New York Public Library)
Jack London on his ranch in Sonoma County in 1914	Courtesy of the NYPL Digital Gallery(image use requires permission from the New York Public…	George Grantham Bain Collection, LoC Prints and Photographs Division (LC-DIG-ggbain-14211)
George Grantham Bain Collection, LoC Prints and Photographs Division (LC-DIG-ggbain-00676)	Photograph circa 1900	Public domain (Wikipedia)