Magnetic Atlas Of Northern Hemisphere
by Library Of Congress/science Photo Library
Title
Magnetic Atlas Of Northern Hemisphere
Artist
Library Of Congress/science Photo Library
Medium
Photograph - Photograph
Description
Magnetic atlas of northern hemisphere. 18th-century magnetic map of the northern hemisphere. Published in 1790, this map (also called a 'variation chart') was produced by US surveyor John Churchman (1753-1805). The dedication (bottom left) is to George Washington, the President of the United States of America.
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September 12th, 2018
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