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Subject
Astronomical instruments
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Buildings
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Lenses
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Pennsylvania
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Pittsburgh
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Pittsburgh (Pa.)
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Date
1889
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1911
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Title
John A. Brashear Co. Ltd.
Creator
Allegheny Observatory
Date
ca. 1890-1920
Location
Pittsburgh (Pa.)
Identifier
6422.15.01.AO
Collection
Allegheny Observatory Records
Contributor
University of Pittsburgh
Type
Image
Title
Making Observatory Equipment
Creator
Allegheny Observatory
Date
ca. 1910-1920
Location
Pittsburgh (Pa.)
Identifier
6422.M05.AO
Collection
Allegheny Observatory Records
Contributor
University of Pittsburgh
Type
Image
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