Die Welt in hundert Jahren

Cram, Ralph Adams, 1863-1942

Blackmar, Frank W. (Frank Wilson), 1854-1931

Morgan, Lewis Henry, 1818-1881

Lowie, Robert Harry, 1883-1957

Petrie, W. M. Flinders (William Matthew Flinders), 1853-1942

Russell, Bertrand, 1872-1970

Tylor, Edward B. (Edward Burnett), 1832-1917

Schiller, F. C. S. (Ferdinand Canning Scott), 1864-1937

Fournier d'Albe, E. E. (Edmund Edward), 1868-1933

Riviere, Joan, 1883-1962 [Translator]; Freud, Sigmund, 1856-1939