Letter, 1880 Dec. 11, Cambridge [Mass.] to [S.P.] Langley [Pittsburgh?].
Related Entities
There are 2 Entities related to this resource.
Trowbridge, John, 1843-1923
http://n2t.net/ark:/99166/w6708nzf (person)
Langley, S. P. (Samuel Pierpont), 1834-1906
http://n2t.net/ark:/99166/w6xf1qpq (person)
Samuel Pierpont Langley (1834-1906) was the third Secretary of the Smithsonian Institution. He also served as the director of the Allegheny Observatory and a professory of astronomy at the Western University of Pennsylvania (now known as the University of Pittsburgh). While at the Smithsonian he founded the Smithsonian Astrophysical Observatory....