Hugh D. Vail: "Volunteer Weatherman"

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Tags: Joseph G. Harlan

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Bond's Spring Governor and the Sidereal Clock

Tags: Haverford College, Joseph G. Harlan, Observatory

Transit Circle: Front Elevation

Tags: Haverford College, Joseph G. Harlan, Observatory

Transit Circle: Side Elevation

Tags: Haverford College, Joseph G. Harlan, Observatory

Haverford College Observatory

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Equatorial Telescope

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Description of the Observatory at Haverford College 1857

Tags: Haverford College, Joseph G. Harlan, Observatory

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