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Image depicts numerous piles of wood planks at the Canadian National Railway Yards in Prince George, B.C. The cutbanks are seen in the background.

Image depicts a logging area somewhere near Prince George, B.C.

Image depicts a logging area somewhere near Prince George, B.C.

Image depicts a logging area, and a section of mountain in the background which is bare due to clear-cut logging. The slide is also labelled "logging show." It is possibly somewhere near Prince George, B.C.

Image depicts a highway, and a section of mountain in the background which is bare due to clear-cut logging. It is possibly somewhere near Prince George, B.C.

Image depicts an aerial view of the Ahbau area somewhere near Prince George, B.C.

Image depicts an aerial view of areas that have been used for logging around Prince George, B.C.

Image depicts the cableway in Willow River, B.C.

Image depicts the cableway, stretching over a river, in Willow River, B.C.

Image depicts the cableway in Willow River, B.C.

Image depicts a snow gauge at an uncertain location.

Image depicts an evaporation pan for water evaporation measurements. The location is uncertain.

Image depicts two unidentified individuals and a van on a farm at an uncertain location, possibly a place called Cypress Hill, with an atmometer and a sunshine recorder.

Image depicts a sunshine recorder at an uncertain location.

Image depicts an atmometer. According to the slide, it is being used for measuring the rate of water evaporation "from carborundum stone." The location is uncertain.

Image depicts objects, including a flag pole, that the slide labels as "survey equipment." The slide also places it as a "Peyto icefall," on the Peyto Galcier in the Banff National Park in Alberta, B.C.

Image depicts an unidentified individual drilling into the ice.

Image depicts a hand-held ice drill.

Image depicts an unidentified individual standing next to a marker and a stake at an uncertain location.

Image depicts an unidentified individual setting up some sort of pole in the snow for a process the slide labels as "snow sounding." The location is uncertain.

Image depicts a marker for aerial photography at an uncertain location. The slide labels it as "Elizabeth Station."

Image depicts a grave somewhere along the White Pass railway.

Image depicts a view over a forested, mountainous area and a river towards the vicinity of Skagway, Alaska.

Image depicts an old trestle along the White Pass railway, and the White pass Train on the left of the image.

Image depicts the White Pass Train crossing over a railway bridge at an uncertain location in the mountains.

Image depicts a patch of snow-covered ground with a sign that reads "Trail of 98," somewhere along the White Pass railway.

Image depicts two merging railway tracks, and what appears to be a frozen river, somewhere near the summit of a mountain.

Image depicts an old trestle along the White Pass railway.

Image depicts an old trestle along the White Pass railway.

Image depicts an old trestle along the White Pass railway.

Image depicts the White Pass Train entering a tunnel in the mountain side.

Image depicts another train on the White Pass railway along a forested mountain side.

Image depicts the White Pass Train crossing over a railway bridge at an uncertain location.

Image depicts a mountain side somewhere along the White Pass railway. The thin ridge along the mountain side is possibly either a highway or part of the railway.

Image depicts a mountain side somewhere along the White Pass railway. The thin ridge along the mountain side is possibly either a highway or part of the railway.

Image depicts a forested mountain side somewhere along the White Pass railway. The thin ridge along the mountain side is possibly either a highway or part of the railway.

Image depicts a view of a forest and river somewhere along the White Pass railway. The thin line in the mountain side is possibly a highway.

Image depicts a view of a forested valley in the mountains somewhere along the White Pass railway.

Image depicts a stream somewhere along the White Pass railway.

Image depicts a view of a forested, mountainous area and a river, somewhere along the White Pass railway. The slide is labelled "begin climb," suggesting the image was taken at the beginning of the White Pass Train's ascent into the mountains.

Image depicts a view over a forested, mountainous area and a river somewhere in the area of Skagway, Alaska.

Image depicts the White Pass Train crossing over a railway bridge at an uncertain location.

Image depicts a bear, possibly a grizzly. The location is uncertain.

Image depicts a van on a highway with mountains in the distance; the location is uncertain, though it is possibly along the Alaska Highway.

Image depicts a lake and a cabin at an uncertain location.

Image depicts a van on a highway with mountains in the distance; the location is uncertain, though it is possibly along the Alaska Highway.

Image depicts the Robert Lowe Bridge, built in 1922, in the Miles Canyon near Whitehorse Y.T.

Image depicts the Robert Lowe Bridge, built in 1922, in the Miles Canyon near Whitehorse Y.T.

Image depicts a river in the Miles Canyon near Whitehorse Y.T. The Robert Lowe Bridge, built in 1922, can be seen over the canyon.

Image depicts several unidentified individuals on a boat in the Miles Canyon near Whitehorse Y.T.