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James Craig
Watson

University of Michigan


Edward Singleton
Holden

Lick Observatory


John M.
Schaeberle

Lick Observatory


Charles Sheldon
Hastings

Johns Hopkins (Physics Tree)


Samuel Pierpont
Langley

Smithsonian Institution


James Edward
Keeler

Lick Observatory (Physics Tree)


William
Chauvenet

Washington University


William
Harkness

U.S. Naval Observatory


Asaph
Hall

Harvard


Simon
Newcomb

Johns Hopkins


Edward Singleton
Holden

Lick Observatory


William Wallace
Campbell

Lick Observatory


Henry A.
Rowland

Johns Hopkins (Physics Tree)


Heinrich
Rubens

Universität Berlin (Physics Tree)


Robert Williams
Wood

Johns Hopkins (Physics Tree)


John M.
Schaeberle

Lick Observatory


James Edward
Keeler

Lick Observatory (Physics Tree)


Edward Singleton
Holden

Lick Observatory


William Wallace
Campbell

Lick Observatory


Joseph Haines
Moore

UC Berkeley


Charles Donald
Shane

Lick Observatory

Gibson
Reaves

USC
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Gibson ReavesX