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Determining the Elevations
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Coast-Geodetic-Survey
Geodesy
Determining the Elevations - Leveling a Continent
Geodesy
Carrying the fire bucket for cold fingers and frozen fountain pens.Level party of William Gibson
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A seven observing party level party with its trucks and equipment.Level party of William Gibson
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Observing in the Boundary Waters area of Minnesota.Level party of J. D. Thurmond
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Leveling along the Loon River.Level party of J. D. Thurmond
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Rodman driving footpin for rod while submerged.Level party of J. D. Thurmond
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Leveling along the trail to Prairie Portage.Level party of J. D. Thurmond
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Level party at Whisky Pass, 12,800 feet.Level party of Gilbert R. Fish
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Level party at Whisky Pass, 12,800 feet.Level party of Gilbert R. Fish
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Level party at Whisky Pass.Level party of Gilbert R. Fish
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Level party in New York City.Level party of Charles D. Meaney
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Extent of 1st and 2nd order level net as of July 1, 1936.W.P.A. computation party of Ralph Pfau
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Leveling - river crossing on the lower Mississippi River.Level party of Karl Jeffers
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Leveling - river crossing on the lower Mississippi River.Level party of Karl Jeffers
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Leveling on the low line at Hoover Dam.Level party of Emmett Sheridan
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Leveling at Mormon Mesa, Lake Meade area.Level party of Emmett Sheridan
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Leveling on the low line at Hoover Dam.Note Hoover Dam in background.Level party of Emmett Sheridan
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Leveling - scene of Colorado River crossing near Overton.Level party of Emmett Sheridan
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Rodman holding rod steady for observations.Bench mark as seen from highway.Level party of Gilbert C. Mast
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Level unit traveling along Glenn Highway.Level party of Gilbert C. Mast
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Level observations along the Salmon River.Note rod just to right of umbrella.Level party of Ira Rubottom
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