Walker, Sears Cook, 1805-1853
Variant namesAmerican astronomer who taught at Harvard, was an actuary for the Pennsylvania Company for the Insurance on Lives and Granting Annuities, served as an assistant at the United States Naval Observatory, and finally headed the Longitude Department of the United States Coast Survey. During his tenure at the U.S. Coast Survey, he developed the method of determining differences of longitude by telegraph.
From the description of A commonplace book upon the plan recommended and practised by John Locke, Esq. : manuscript, 1823. (University of Pennsylvania Library). WorldCat record id: 225069141
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Birth 1805-03-28
Death 1853-01-30
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