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Friedrich Adolf
Trendelenburg
Universität Berlin (Philosophy Tree)

Hermann
Ulrici
University of Halle (Philosophy Tree)


George Sylvester
Morris
Johns Hopkins (Philosophy Tree)


Benjamin
Peirce
Harvard (MathTree)


Charles Sanders
Peirce
Johns Hopkins (Philosophy Tree)


Johann Kaspar
Bluntschli
Universität München (History of History Tree)

Karl
Knies
Heidelberg University (History of History Tree)


Herbert Baxter
Adams
Johns Hopkins (History of History Tree)




Henry Pickering
Bowditch
Harvard Medical School

Wilhelm
Wundt
University of Leipzig




John
Dewey
Columbia (PsychTree)



Shelton
Phelps
George Peabody College, Vanderbilt University
(Options)

Alfred Leland
Crabb
George Peabody College, Vanderbilt University

Shelton PhelpsX