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Nathaniel
Bowditch
Harvard (Physics Tree)

Sears Cook
Walker
US Naval Observatory


Benjamin
Peirce
Harvard (MathTree)


Simon
Newcomb
Johns Hopkins


Franz Friedrich Ernst
Brünnow
University of Michigan

Benjamin
Peirce
Harvard (MathTree)


Asaph
Hall
Harvard


William
Harkness
U.S. Naval Observatory


Franz Friedrich Ernst
Brünnow
University of Michigan

Benjamin
Peirce
Harvard (MathTree)


James Craig
Watson
University of Michigan


William
Chauvenet
Washington University

William
Harkness
U.S. Naval Observatory

Asaph
Hall
Harvard

Simon
Newcomb
Johns Hopkins


Edward Singleton
Holden
Lick Observatory


John M.
Schaeberle
Lick Observatory


Chester
Lyman
Yale (Physics Tree)

Hermann
von Helmholtz
Physikalisch-Technische Reichsanstalt (Neurotree)

Gustav Robert
Kirchhoff
Universität Berlin (Physics Tree)


Charles Sheldon
Hastings
Johns Hopkins (Physics Tree)


Joseph
Winlock
Harvard College Observatory


Samuel Pierpont
Langley
Smithsonian Institution


James Edward
Keeler
Lick Observatory (Physics Tree)


Alexander Dallas
Bache
Penn (Geotree)

Sears Cook
Walker
US Naval Observatory


William
Chauvenet
Washington University


Asaph
Hall
Harvard


William
Harkness
U.S. Naval Observatory


Franz Friedrich Ernst
Brünnow
University of Michigan

Benjamin
Peirce
Harvard (MathTree)


Asaph
Hall
Harvard


Benjamin
Peirce
Harvard (MathTree)


Simon
Newcomb
Johns Hopkins


Edward Singleton
Holden
Lick Observatory


William Wallace
Campbell
Lick Observatory

Charles Pollard
Olivier
Penn
(Options)

Balfour Stanley
Whitney
University of Oklahoma

Raymond Hiram
Wilson
NASA Headquarters

Robert Stanley
Alexander
Washburn University

Paul B.
Etzel
San Diego State University


Kwan-Yu
Chen
UF Gainesville

Charles OlivierX