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


Edward Emerson
Barnard

Lick Obsrvatory


Heinrich Wilhelm
Dove

Universität Berlin (Meteorology Tree)


Johann Franz
Encke

Universität Berlin


Franz Friedrich Ernst
Brünnow

University of Michigan


James Craig
Watson

University of Michigan


Franz Friedrich Ernst
Brünnow

University of Michigan


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)



Daniel Walter
Morehouse

Drake University
(Options)

Seth Barnes
Nicholson

Mount Wilson Observatory

Nicholas Ulrich
Mayall

Lick Observatory

Daniel MorehouseX