Cat train on the move at noon on a clear day

Observing tower with wind screen near Oliktok Point

Baseline measurements on the lagoon ice - note stakes along line

Baseline measurements on the lagoon ice - note stakes along line

Triangulation party at Cross Island

Cat train on the way to a triangulation station for observations Termed an "O" train, for triangulation observations

Cat train on the way to a triangulation station for observations Termed an "O" train, for triangulation observations

Caterpillar tractor with Brooks Range in background

Brooks Range visible miles away over the flat Arctic plain Such views lend credence to the flat earth theory Just kidding!

Triangulation party at Camden Bay

While crossing frozen sea area, pressure ridges presented formidable obstacles

Observing party on a barrier island. Tall hydro signal built to increase offshore range for visual control.

The first sign of the spring melt - a stream is seen flowing on the ice

Indications of the coming spring melt - bare hills, pools of water, bare hands

Increasing expanses of melted snow and ice during the spring melt Weasel checking sea ice landing strip at Oliktok Point - If weasel didn't break ice, ski planes could land. If weasels broke ice, they would float as they were amphibious.

Observing party on a barrier island. Tall hydro signal built to increase offshore range for visual control.

Observing party on a barrier island. Tall hydro signal built to increase offshore range for visual control.

Weasel at observing tent

Crepuscular rays illuminate the melting ice of the Beaufort Sea

Erosion along the shore of Tigvariak Island Hydrographic signal built in anticipation of the coming open water

Survey launches at Tigvariak Island ready for a summer season of work Boats painted orange for visibility in Arctic waters

Profile view of launches at Tigvariak Island

"Goldie" - a landing craft - used to transport men and equipment

The starboard quarter view of the landing craft "Goldie"

Ice at Cross Island

Loading a weasel on "Goldie"

Survey Launch #15 , called "Fair Dinkum" at Cross Island

Like clouds, ice bergs can assume fantastic shapes

A large ice berg (by Beaufort Sea standards) - remains of a pressure ridge.

Collecting fresh water from a melting ice berg Pools of fresh water form on the top of the berg

Description not available.

Cruising through an ice field - l to r - Ted Shanahan, Stan Jeffers, Jerry Gray, and Simon Tagarook

Survey launch offshore from Cross Island

Compass stand and ice berg

Collecting fresh water on top of an ice berg Pools of fresh water form on the top of the berg

Collecting fresh water at Cross Island on a berg near Cross Island on misty day

Survey launch and supply launch at Cross Island

Survey launch running near the shore at Cross Island

An orange boat accentuated by the blue water and bright white ice berg

Arctic sunset - there's a chill in the air and the night's are getting longer It's time to head south

A boat's eyeview of an ice berg Tied up to berg while collecting water

On a fresh water collecting expedition Pools of fresh water form on the top of the berg

Survey launch #14 towing a dinghy

Open water at last - let's do some hydro! Shoran navigation antenna seen on launch

The end of the day

Description not available.

Survey launch at anchor with dinghy returning from shore

A Shoran navigation shore station

A Shoran navigation shore station and launch shore camp.

Survey boat at the Long Island camp - Shoran navigation antenna on the beach