Frank A.
Beach

UC Berkeley


Jerome
Kagan

Harvard


George A.
Miller

Princeton




Hans
Wallach

New School for Social Research








Clark L.
Hull

UW Madison










Edward Chace
Tolman

UC Berkeley












Carl F. P.
von Martius

University of Munich


Lorenz
Oken

Universität Zürich (Physiology Academic Tree)


Ignaz
Döllinger

University of Munich


Andreas
Röschlaub

University of Munich








Rudolf
Wagner

Universität Göttingen


Rudolf
Leuckart

University of Leipzig


Charles Otis
Whitman

Chicago (Evolution Tree)


John T.
Patterson

UT Austin (FlyTree)

James
Crowell

University of Illinois
(Options)

James CrowellX