U.S. Department of Commerce/ Coast and Geodetic Survey hydrographic survey display. ION/RTCA/RTCM meeting at Astor Hotel.

U.S. Department of Commerce/ Coast and Geodetic Survey public affairs display at the Miami International Boat Show.

U.S. Department of Commerce/ Coast and Geodetic Survey hydrographic survey display. At U.S. Power Squadron Meeting at Astor Hotel. J.J. Rafferty, a C&GS employee stationed at New York is second from left.

Meades Ranch, Kansas, the datum point for the North American Datum of 1927.

Earthquake belts of the Earth, a map produced by Commander Nicholas Heck, C&GS, about 1935. Note earthquake occurrences on Mid-Atlantic Ridge and following Pacific Ring of Fire.

Aerial photograph taken with single lens camera.

North Slope tractor train during Dew Line geodetic surveys.

Level crew at the White House. A C&GS crew checked the walls of the White House ever four years for subsidence or ground uplift.

Lieutenant Eugene Taylor operating Bamberg astronomic transit.

Measuring baseline with Invar Tape, maintaining constant tension during reading. Making rear contact on bench over traverse station.

Leveling operations in vicinity of Bilby tower.

A buoy used for offshore surveying.

Bottom sampling device, detachable weight used during piano-wire sounding operations, and water sampling cup. All these instruments were used in deep-sea sounding operations.

The radio room of a Coast and Geodetic Survey ship.

Lieutenant Hubert Keith reading temperatures measured by deep-sea reversing thermometers.

Collecting bottom sample material to determine anchoring characteristics of bottom. These samples were sent to the Smithsonian Institution after describing for charting purposes.

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

Saugerties Lighthouse, Hudson River.

5 ton crane being used for over-the-side oceanographic operations.

Dredge and trawl winch.

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

The radio room of a Coast and Geodetic Survey ship.

Landing supplies for Shoran Station.

Chief Radio Technician, Ricardo Vendura, operating a depth recorder and monitoring a gyro repeater in the radio room of the U. S. Coast Survey Ship Tulip. This was just prior to the Philippine Islands gaining their independence .

Lieutenant Commander Franklin R. Gossett and Chief Petty Officer Savage operating sounding equipment aboard the USC&GS Ship OCEANOGRAPHER.

The Atlantic Marine Center, the USC&GS ship base.

Smiling Coast Surveyors in the Director's Office of the C&GS Atlantic Marine Center.

Smiling Coast Surveyors in the Washington, D.C. Headquarters of the C&GS.

Atlantic Marine Center, ESSA C&GS ship base.

Atlantic Marine Center, C&GS ship base.

Atlantic Marine Center, C&GS ship base. Empty field in center of picture became C&GS thence NOAA storage yard.

Atlantic Marine Center, ESSA C&GS ship base.

Atlantic Marine Center, ESSA C&GS ship base.

Compensating a magnetic compass. USC&GS Ship BACHE.

Shoran installation on radar tower on Agattu Island. This was part of the first electronic navigation project carried out by the C&GS following their adaptation of the aerial bombing navigation system "GEE" to Shoran. Captain Clarence Burmister of the C&GS was instrumental in developing Shoran as a hydrographic survey navigation system.

ESSA C&GS Atlantic Marine Center ship base.

C&GS Atlantic Marine Center ship base.

Unidentified oceanographic operations.

Chief Survey Technician securing Nansen bottle for temperature- water characteristic studies on line. Lieutenant Hubert Keith looks on.

Recorder noting depths as showing on 808 Fathometer display.

Unidentified oceanographic operations.

Recorder noting depths as showing on 808 Fathometer display.

Portable depth recorder used with 808 Fathometer system.

Hand lowering current measuring instrument.

Current survey party at work.

Lieutenant Dale North checking distances on first automated hydrographic system on NOAA high speed launch 1257.

Taking simultaneous readings with Worden gravimeter.

The Cheltenham Magnetic Observatory.

A Milne-Shaw Seismograph.

Lieutenant Edward J. Brown with portable pendulum gravity measuring apparatus.