Cattell, James McKeen (1860-1944)(4)
Titchener, Edward B. (1867-)(4)
Baldwin, James Mark (1861-1934)(2)
George Allen and Unwin Ltd. (London)(2)
Princeton University (1896-)(2)
Accademia delle Scienze di Torino(1)
American Philosophical Society (1743-)(1)
American Psychological Association (1892-)(1)
Chrystal, George (1851-1911)(1)
Columbia University (1896-)(1)
Cornell University (Ithaca, NY) / Psychological Laboratory(1)
Dittrich, Ottmar (1865-1951)(1)