William Draper
Harkins

University of Montana, University of Chicago


Hamilton Perkins
Cady

University of Kansas






Gilbert N.
Lewis

UC Berkeley


Niels
Bohr

Copenhagen University (Physics Tree)












Walter Daniel
Bonner

Queens University


Manne
Siegbahn

Royal Swedish Academy of Sciences (Physics Tree)


Peter
Pringsheim

Universität Berlin (Physics Tree)




Harold S.
Johnston

UC Berkeley












Arnold Johannes Wilhelm
Sommerfeld

Universität München (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Erwin
Schrödinger

Universität Wien (Physics Tree)







John R.
Krenos

Rutgers, New Brunswick
(Options)

John KrenosX