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Chief Radio Technician, Ricardo Vendura, operating a depth recorder an...

Chief Radio Technician, Ricardo Vendura, operating a depth recorder and monitoring a gyro repeater in the radio room of the U Photo

Commander Marvin Paulson hanging a Nanson bottle for collecting water...

Commander Marvin Paulson hanging a Nanson bottle for collecting water specimen and measuring temperature at depth. Photo

Lieutenant Eugene Taylor operating Bamberg astronomic transit.

Lieutenant Eugene Taylor operating Bamberg astronomic transit. Photo

Newspaper clipping detailing the work of the Coast and Geodetic Survey...

Newspaper clipping detailing the work of the Coast and Geodetic Survey. Photo

The camp at Pecos, Texas

The camp at Pecos, Texas Photo

A triangulation diagram of the area covered during the field season of...

A triangulation diagram of the area covered during the field season of 1923. Photo

The Talkeetna River about 125 miles north of Anchorage.

The Talkeetna River about 125 miles north of Anchorage. Photo

The return from Station Clear.

The return from Station Clear. Photo

Measuring the baseline

Measuring the baseline Photo

Aerial photograph of the Salmon River showing the rugged nature of the...

Aerial photograph of the Salmon River showing the rugged nature of the country Photo

Operating the Coast and Geodetic Survey historic copper plate printing...

Operating the Coast and Geodetic Survey historic copper plate printing press. Photo

A Bamberg astronomic theodolite used to determine astronomic latitude...

A Bamberg astronomic theodolite used to determine astronomic latitude and longitude as well as determine gravitational deflection from the vertical. Photo

Mechanized leveling before the automobile

Mechanized leveling before the automobile Photo

Triangulation tower constructed from pre-cut lumber at Tacoma North Ba...

Triangulation tower constructed from pre-cut lumber at Tacoma North Base Photo

Topographic work in Alaska, Glacier Bay area, off of C&GS Ship WESTDAH...

Topographic work in Alaska, Glacier Bay area, off of C&GS Ship WESTDAHL. Photo

The "goat trail" in Chitistone Valley used during the Alaska-Canada Bo...

The

Nine-lens photograph

Nine-lens photograph Photo

Nine-lens camera used by the Coast and Geodetic Survey

Nine-lens camera used by the Coast and Geodetic Survey Photo

Army aerial photography unit with three-lens camera

Army aerial photography unit with three-lens camera Photo

Compiling a nautical chart from field survey sheets and other data.

Compiling a nautical chart from field survey sheets and other data. Photo

Engraving on nautical chart negative.

Engraving on nautical chart negative. Photo

Information from other sources is reduced and included in the compilat...

Information from other sources is reduced and included in the compilation drawing Photo

Operating the 50-inch camera designed by Captain Otis Reading, USC&GS

Operating the 50-inch camera designed by Captain Otis Reading, USC&GS Photo

USC&GS pressman (note logo on shirt) operating guillotine paper cutter...

Fathometer trace in the vicinity of the Juan de Fuca Ridge area showin...

Fathometer trace in the vicinity of the Juan de Fuca Ridge area showing many minor knolls rising from the bottom Photo

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