English:
Scanned by uploader from Menand, Louis (2001),
The Metaphysical Club
, New York: Farrar, Straus and Giroux, p. 317,
ISBN
0-374-52849-7
. Original photograph from the John Dewey Photograph Collection (N3-1104, N3-1109), Special Collections, Morris Library, Southern Illinois University at Carbondale.