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![General Guillaume Henri Dufour (1787-1875), Swiss geodesist, topographer, andcartographer pers0351.jpg General Guillaume Henri Dufour (1787-1875), Swiss geodesist, topographer, andcartographer](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_pers0351.jpg?itok=BqldTrOL)
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General Guillaume Henri Dufour (1787-1875), Swiss geodesist, topographer, andcartographer. A contemporary of Ferdinand Hassler, founder of the U.S. CoastSurvey.
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