Bow of orange painted survey launch picking its way through ice bergs

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

Ice along the shore at sunset

Building a hydrographic signal - used for near shore hydrographic work Stan Jeffers on right.

Ice along the shore at Cross Island

Jellyfish along an icy shoreline

Tide gage installation - Abe Simmons and Harley Nygren

Building a hydrographic signal - used for near shore hydrographic work

Beginning to build a hydrographic signal

Orange, white, and blue - survey launch next to ice berg

Signal pole on Dinkum Sands - east side of Prudhoe Bay The existence of these sands has been the subject of litigation

Collecting fresh water from ice berg Pools of fresh water collect on top of melting ice bergs

Ice bergs seen from survey launch after summer melt. Bergs complicated survey work.

Survey launch towing dinghies after supplying observing camp

Heading out to the Survey Launch #15 to start the day's work.

A cloudy day at Tigvariak - length of beard indicates nearing end of season Andrew F. "Pierre" Menard with beard.

A late summer sunset from a survey launch

Stopping at a small Alaska town on the way south

Stopping at a small Alaska town on the way south

Flying over the Colville River on the way home

Flying over the Brooks Range enroute to North Slope

The sea ice off of Tigvariak Island

A sun pillar forms as the sun rises over the Arctic plain

Drifting snow at Tigvariak Camp

Digging out the Tigvariak Island Camp

Harley Nygren

Drifting snow at Tigvariak Camp

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.