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Coast-Geodetic-Survey
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Historic Geodesy
Map showing lines of equal magnetic declination as determined by the CoastSurvey in 1850.
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.jpg
(751.91 KB)
Map showing lines of equal magnetic declination as determined by the CoastSurvey in 1875.
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.jpg
(763.79 KB)
Map showing lines of equal magnetic declination and of equal annual change as determined by the Coast and Geodetic Survey in 1935.
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.jpg
(773.68 KB)
Mixing ink for the Harris presses.
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(4.32 MB)
Harris presses in the press room in the basement of the Department of CommerceBuilding.
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.jpg
(3.94 MB)
Harris presses in the press room in the basement of the Department of CommerceBuilding.
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.jpg
(4.58 MB)
Two color offset press. One of two presses of this type used by the Coast andGeodetic Survey in its reproduction plant for the printing of aeronautical andnautical charts. In the basement of the the Department of Commerce building.This press has an
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.jpg
(2.85 MB)
A view of the Harris presses in the reproduction plant of the Coast and Geodetic Survey. These presses were in the basement of the Department of Commercebuilding.
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.jpg
(3.57 MB)
Coast and Geodetic Survey pressmen in action on a Harris press.
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.jpg
(3.83 MB)
A view of the Harris presses in the reproduction plant of the Coast and Geodetic Survey. These presses were in the basement of the Department of Commercebuilding.
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.jpg
(3.9 MB)
A Harris press in the reproduction plant of the Coast and Geodetic Surveyin the basement of the Department of Commerce Building.
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.jpg
(4.47 MB)
A Harris press to the right and the Seybold-Harris guillotine paper cutter tothe left. Note the C&GS; logo pressmen shirt on the man on the guillotine.
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.jpg
(3.82 MB)
Plane table with view of tripod head to facilitate leveling and orienting thetable.
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.jpg
(17.64 MB)
Cut-away view of plane table with alidade.
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.jpg
(2.64 MB)
Five-lens photogrammetric camera used for aerial photography and mapping in the1920's and 1930's.
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.jpg
(3.69 MB)
Army aerial photography unit with three-lens camera. Circa 1920's.
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.jpg
(10.82 MB)
Steamer tracks showing relationship of Alaska to Japan and other parts of theFar East. This map also shows virtually the total operating area of the USC&GS;including the East and Gulf Coasts of the United States, Puerto Rico, the WestCoast, Alaska,
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.jpg
(5.58 MB)
Salt domes at the edge of the continental shelf in the Gulf of Mexico. Offshore salt domes were first discovered by the United States Coast and Geodetic Survey in the 1930's and properly identified as salt domes by Francis Shepard, thefather of subm
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.jpg
(5.65 MB)
Chart 5101A, first published in 1939, showing contours to be used for contour-following navigation. This was the first chart produced by the C&GS; and amongthe first in the world to have adequate bathymetry for use by mariners as anavigational tool.
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.jpg
(5.62 MB)
Chartlet showing track of PATHFINDER from Aleutians to West Coast at end of1947 field season. Position 67 is the location of PATHFINDER Seamount, firstdiscovered on this particular track. This seamount is among the larger of theNorth East Pacific S
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.jpg
(4.29 MB)
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