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C&GS Building at 119 D

C&GS Building at 119 D Photo

Winslow Homer sketch of navigators on the Grand Banks.

Winslow Homer sketch of navigators on the Grand Banks. Photo

Leadline sounding operations

Leadline sounding operations Photo

Lieutenant Roswell Bolstad measuring a horizontal angle

Lieutenant Roswell Bolstad measuring a horizontal angle Photo

Tanner Sounding Machine

Tanner Sounding Machine Photo

Leadline sounding operations from the WESTDAHL

Leadline sounding operations from the WESTDAHL Photo

Coast and Geodetic Survey Ship DISCOVERER

Coast and Geodetic Survey Ship DISCOVERER Photo

Coast and Geodetic Survey Steamer BLAKE

Coast and Geodetic Survey Steamer BLAKE Photo

Taking horizontal sextant angles from ship's mast

Taking horizontal sextant angles from ship's mast Photo

Sounding pole with walk hydro outfit

Sounding pole with walk hydro outfit Photo

Using sounding pole to measure depths

Using sounding pole to measure depths Photo

Using sounding pole to measure depth in shallow water

Using sounding pole to measure depth in shallow water Photo

Leadline survey from catamaran hull.

Leadline survey from catamaran hull. Photo

En route to Cape Nome

En route to Cape Nome Photo

Crossing Amargosa River after spring rains

Crossing Amargosa River after spring rains Photo

Trying not to get stuck

Trying not to get stuck Photo

Amphibious truck

Amphibious truck Photo

Seriously stuck in the sand

Seriously stuck in the sand Photo

"Another one of those things"

Steel truck wreck at San Sabo

Steel truck wreck at San Sabo Photo

"Just one of those things"

A bad section of road

A bad section of road Photo

An "unreliable crossing"

Truck leaving Station Worland in the Bighorn Mountains

Truck leaving Station Worland in the Bighorn Mountains Photo

Dwarfed in an Arizona canyon

Dwarfed in an Arizona canyon Photo

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