Charles Christian
Lauritsen

Caltech (Physics Tree)


H. Richard
Crane

University of Michigan (Physics Tree)




H. Richard
Crane

University of Michigan (Physics Tree)




John W.
Hooper

Georgia Tech


Henry Norris
Russell

Princeton (Physics Tree)


Donald Howard
Menzel

Harvard (Physics Tree)





Scott W.
Wren

CU Boulder
(Options)

Scott WrenX