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Harvard College Observatory

 Organization

REFINE MY RESULTS:

Type
Archival Object 188
Collection 54
 
Subject
Variable stars. 31
Astronomy -- Observations. 11
Astronomical clocks -- United States. 7
Asteroids. 6
Astronomy -- Research. 6
∨ more
Chronograph. 6
Longitude -- Measurement -- History. 6
Solar eclipses -- Observations. 6
Astronomers -- United States. 5
Astronomical photometry. 5
Astronomy. 5
Harvard University -- Astronomy 5
Photographs 5
Telescopes. 5
Astronomical observatories -- Massachusetts -- Cambridge. 4
Astronomy -- 19th century. 4
Correspondence. 4
Diaries 4
Meteors. 4
Time measurements. 4
Astronomy -- History. 3
Chronometers. 3
Comets. 3
Financial records. 3
Stars -- Clusters. 3
Sun -- Research. 3
Women astronomers--United States 3
Amateur astronomy. 2
Asteroids--Orbits. 2
Astronomers 2
Astronomical instruments -- Design and construction. 2
Astronomical photography. 2
Boyden Station (Bloemfontein, South Africa) 2
Horology. 2
Manuscripts (documents) 2
Milky Way 2
Nebulae. 2
Observatories. 2
Occultations. 2
Photoprints. 2
Scientific apparatus and instruments. 2
Scientists 2
Scientists--United States 2
Surveying -- Geodetic. 2
Time -- Systems and standards -- United States. 2
Women in astronomy -- History. 2
Aberdeen Proving Ground (Md.) 1
Account books. 1
Aging--United States 1
Albums. 1
American Association of Variable Star Observers. 1
Annual reports. 1
Astrometry 1
Astronomers -- Archives. 1
Astronomers--United States 1
Astronomers. 1
Astronomical instruments 1
Astronomical observatories -- South Africa. 1
Astronomy 1
Astronomy -- Societies, etc. 1
Astronomy -- Study and teaching. 1
Astrophysics. 1
Auroras--Spectra. 1
Auroras. 1
Autobiographies 1
Autobiographies. 1
Black-and-white photographs 1
Black-and-white photographs. 1
Boyden Station (Arequipa, Peru) 1
Clocks and watches -- Marketing. 1
Comets--Orbits. 1
Contracts. 1
Cryptography. 1
Diplomas. 1
Donati comet. 1
Drawings 1
Eclipses, Solar -- 1973. 1
Emigration and immigration 1
Family records 1
Geodesy -- Observations 1
Geodesy. 1
Glass plate negatives 1
Harvard College Observatory (Cambridge, MA) 1
Harvard College Observatory -- Photographs. 1
Harvard University -- Finance. 1
Harvard University -- Women. 1
Immigrants' writings, German 1
Lantern slides. 1
Lecture notes 1
Letterpress copybooks. 1
Letters (correspondence) 1
Letters. 1
Magnetic fields -- Measurement 1
Magnetic fields. 1
Magnetism. 1
Maine. 1
Manuscripts for publication 1
Maps 1
Medals 1
Memoirs 1
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