PATHFINDER at the dock at Dutch Harbor.

Unit sign for the Navy Aero Unit at Dutch Harbor. Aero is short for Aerographer 's facility or the Weather Office as it would be known in the civilian world.

Building materials being taken to shore for shore camps at St. Paul.

Launch pickup on the PATHFINDER.

PATHFINDER at the dock at Dutch Harbor.

LCVP used by PATHFINDER for landing men, equipment, and building supplies.

Jack Scherting at the throttles of the PATHFINDER.

"Notice to all firemen and oilers - Keep hands off the Bailey Board" by Casey.

A stormy day on the Bering Sea.

A stormy day on the Bering Sea.

PATHFINDER at anchor in Laska Cove.

The PATHFINDER at St. Paul, Pribilof Islands.

Thick-billed murre rookery.

Laska Cove scenery.

Anchor chain on launch off PATHFINDER.

Coast Guard Cutter TANEY in Dutch Harbor after search and rescue operation.

Coast Guard Cutter TANEY.

Early morning at Adak piers.

Low clouds and mountains while coming into Adak Harbor.

Approaching the Adak piers.

An iron-bound coast approaching Adak.

Approaching Adak.

Volcanic islands approaching Adak.

Sunset in the Pribilof Islands.

A spring dawn while approaching Adak.

Ragged Point.

The high peak was a triangulation station that had to be climbed to from the shore.

Triangulation Station Raggy at Ragged Point.

Andrew Jackson monument as engraved by Albert Boschke.

U.S. Patent Office as engraved by Albert Boschke.

Doing range-azimuth hydrography off Canadian Hydrographic Service Ship MAXWELL.

Doing range-azimuth hydrography off NOAA Ship PEIRCE. PEIRCE is to right of observer. Motorola Mini-Ranger (white box) is distance measuring instrument on tripod.

Bosun Group Leader Al Washington and Seaman Mike Briscoe erecting tower for supporting Motorola Mini-Ranger. Person in blue unidentified.

ARGO electronic navigation system transmitting antenna being erected. Gin pole is used as lever on left of image.

Range Azimuth setup with Wild T-2 Theodolite used for observing azimuth to Canadian Hydrographic Service launch off CHS MAXWELL.

NOAA Ship PEIRCE crew erecting hydrographic signal over survey mark.

Hydrographic signal erected by crew off NOAA Ship PEIRCE.

Large hydrographic signal erected by crew off NOAA Ship PEIRCE. This signal and other similar signals were used by ship to calibrate electronic navigation systems.

Orange banner hung off cliff to serve as hydrographic signal by crew off NOAA Ship PEIRCE.

Lieutenant George Leigh setting up a target and light for geodetic survey observations.

Lieutenant George Leigh setting up a target and light for geodetic survey observations.

Motorola Mini-Ranger super high-frequency navigation transceiver mounted on 20-foot aluminum mast to increase useable distance of this line-of-sight navigation system.

Canadian Hydrographic Service tide staff graduated in meters.

Bubbler tide gauge mounted on tree with tubing going to underwater orifice. The two tide staffs were necessary to cover the full range of tide of approximately 25 feet.

Ensign Marty Conricote checking an ADR water-level gauge on Lake Superior. The gauge to the left was operated by the U.S. Army Corps of Engineers. These gauges were in a Lake Superior harbor.

Tide staff in southeast Alaska.

U.S. tide staff graduated in feet being installed by NOS/COOPS personnel.

Description not available.

Description not available.

Description not available.