Friedrich Christoph
Dahlmann

University of Bonn


Heinrich
von Treitschke

Universität Berlin


Theodor
Mommsen

Berlin Academy of Sciences


Johann Gustav
Droysen

Universität Kiel












William Morris
Davis

Harvard (Physics Tree)




Hiram
Bingham III

Yale (GeograTree)


Isaiah
Bowman

Johns Hopkins (GeograTree)
?





David M.
Potter

Stanford
(Options)

David PotterX