Hugh D. Vail: "Volunteer Weatherman"

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Geometrical Problems - page 13

Tags: Mathematics, Teacher

Friends' Boarding School, West-town, Pa.

Tags: Westtown School

Friends Meeting House, Plainfield, New Jersey

Equatorial Telescope

Tags: Haverford College, Observatory

Equatorial Telescope

Tags: Joseph G. Harlan, Observatory

Description of the Observatory at Haverford College 1857

Tags: Haverford College, Joseph G. Harlan, Observatory

Committee on Instruction- pages 98-99

Tags: Mathematics, Teacher, Westtown School

Committee on Instruction- pages 96-97

Tags: Mathematics, Teacher, Westtown School

Committee on Instruction- pages 100-101

Tags: Mathematics, Teacher, Westtown School

Bond's Spring Governor and the Sidereal Clock

Tags: Haverford College, Joseph G. Harlan, Observatory

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