Negative of a photographic postcard showing South Sister mountain in the Oregon Cascade Range. The peak of the mountain is obscured by clouds. Taken from a meadow near the peak. Handwriting on negative reads, "South Sister of the Three Sisters - Ore. Christian S-383."

Negative of a photographic postcard showing a view of Mount Jefferson at the end of a large forested valley. Patches of trees in the forest appear burned. Rock outcropping to the left. Handwriting on negative reads, "Mt. Jefferson El. 10,495 - Oregon. Christian S-380."

Negative of a photographic postcard showing a cracked patch of ice and snow along the summit ridge of a mountain. The mountain peak is in the background. Handwriting on negative reads, "Snow Fields - Three Sisters - Oregon. Christian S-371."

Negative of a photographic postcard showing snowy mountains in the Oregon Cascade Range. Pictured (left to right) are the Three Sisters, Mount Washington, and Three Fingered Jack. Handwriting on negative reads, "Three Sisters, Mt. Washington, Three Finger Jack - Oregon. Christian S-353."

Negative of a photographic postcard showing a bridge over an irrigation canal, with a view of snow-capped Mount Jefferson in the distance. Likely taken near Madras Oregon along The Dalles - California Highway (today known as Highway 97). Handwriting on negative reads, "Irrigation Canal - The Dalles-Calif. Hwy. Christian S-306."

Negative of a photographic postcard showing a view of Scott Lake and the Three Sisters mountains in the background. Handwriting on negative reads, "Scott Lake McKenzie Highway, Oregon. Christian S-264."

Negative of a photographic postcard showing the Metolius River winding through a field. The peak of Mount Jefferson is in the background. Clouds wrap around the lower part of the mountain. Handwriting on negative reads, "Mt. Jefferson - Metolius River - Oregon. Christian S-259."

Negative of a photographic postcard showing Elk Lake with a view of South Sister in the background. Taken from the shore of the lake. Broken Top mountain is visible to the right. Handwriting on negative reads, "Elk Lake near Bend, Oregon. Christian S-254."

Negative of a photographic postcard showing a person sitting on a rock, looking at a view of North and Middle Sisters in the distance. Both mountains have snow on them. The person's back is to the camera. There are large rocks in the foreground. Handwriting on negative reads, "North and Middle Sisters - Oregon. Christian S-135." Handwriting also notes elevation of North Sister as, "el. 10094" and elevation of Middle Sister as, "el. 10053."

Negative of a photographic postcard showing a dirt road leading toward a clearing in the trees. A mountain is visible in the distance. Handwriting on negative reads, "Lava Lake Road - Santiam Highway, Oregon. Christian S-127."

Negative of a photographic postcard showing a view of Mount Jefferson. There is a rock outcropping in the foreground. Handwriting on negative reads, "Mt. Jefferson from Battle Axe (sic) L.O. Christian S-117."

Negative of a photographic postcard showing a view of a forested valley with mountains in the distance. Taken from a mountainside, looking down at the valley. Trees in the foreground are covered in snow. Handwriting on negative reads, "Union Point Crater Lake, Ore. Christian 11-537."

Negative of a photographic postcard showing a glacier on a mountain. A mountain peak is visible in the background. Handwriting on negative reads, "Glacier between Middle and North Sisters, Ore. Christian S-389."

Negative of a photographic postcard showing a lake and the Three Sisters mountains in the Cascade Range. The mountains are reflected in the water of the lake. The landscape is snowy. Handwriting on negative reads, "Winter Reflections - Three Sisters, Ore. Christian S-357."

Negative of a photographic postcard showing a view of the Cascade Range mountains from Lava Butte Road in Oregon. View includes Mount Bachelor, Broken Top, and the Three Sisters mountains. Handwriting on negative reads, "Lava Butte Road - Oregon. Christian S-285."

Negative of a photographic postcard showing a highway in the high desert of Central Oregon. There is a view of the Three Sisters mountains in the Cascade Range in the distance. Handwriting on negative reads, "Redmond - Sisters Highway - Oregon. Christian S-243."

Negative of a photographic postcard showing a view of Middle Sister and North Sister mountains from McKenzie Pass in the Cascade Range in Oregon. The view is from behind a rock wall, tinted blue, in the foreground. The mountains are covered in snow. Handwriting on negative reads, "McKenzie Pass, Oregon. Christian S-242."

Negative of a photographic postcard showing 3 people on horseback on Jefferson Park Trail in Oregon. Behind them is a view of the mountains. Handwriting on negative reads, "View from Jefferson Park Trail. Christian S-210."

Negative of a photographic postcard showing a river in the foreground and a view of South Sister mountain in the background. Handwriting on negative reads, "South Sister from Fall Creek, Oregon. Christian S-184."

Negative of a photographic postcard showing a road on the McKenzie Pass in the Cascade Range in Oregon. Middle Sister and North Sister mountains are in the background. Handwriting on negative reads, "Along McKenzie Pass, Oreg. Christian S-161."

Negative of a photographic postcard showing a person looking through a telescope at the D. Wright Observatory on the McKenzie Pass in the Cascade Range in Oregon. Lava beds and trees stretch into the distance and Middle Sister and North Sister mountains are in the background. There is a directional marker in the foreground. Handwriting on negative reads, "D. Wright Observatory - McKenzie Pass, Ore. View from Observatory. Christian S-160A."

Negative of a photographic postcard showing a person standing on a large lava bed in the McKenzie Pass area of the Cascade Range in Oregon. The lava bed is surrounded by a forest. Middle Sister and North Sister mountains are in the background. Handwriting on negative reads, "Lava Beds - McKenzie Pass, Oregon." The sky in the photograph has been colored blue.

Negative of a photographic postcard showing the Battle Ax lookout station on Battle Ax Mountain. In the distance is Mount Jefferson. Handwriting on negative reads, "Mt. Jefferson from Battle Axe (sic) L.O. Christian S-111."

Negative of a photographic postcard showing the confluence of the John Day River and the Columbia River in Oregon. View west down the Columbia River and Mount Hood in the distance. A railroad bridge crosses the John Day River, though the river itself is not visible. There are railroad tracks in the foreground. Handwriting on negative reads, "Mouth of John Day Riv. - Mt. Hood in distance. Christian 11-998."

Negative of a photographic postcard showing a street scene in Odell, Oregon. Businesses include a Chevron gas station, S&L Food Store, and more. Snow-capped Mount Hood is in the background. Handwriting on negative reads, "Odell, Oregon. Christian 11-984."

Negative of a photographic postcard showing a portion of Crater Lake, Oregon, with a view of Mount Scott in the background. Large tree in the right foreground. Handwriting on negative reads, "Mt. Scott Crater Lake, Ore. Christian 11-842."

Negative of a photographic postcard showing rocks on the rim of Crater Lake, Oregon. Hillman Peak is in the background. The lake is not pictured. Handwriting on negative reads, "Rim Rock - Crater Lake, Ore. Christian 11-789."

Negative of a photographic postcard showing the western end of Crater Lake, Oregon. Hillman Peak is on the left. Handwriting on negative reads, "Rim of Crater Lake, Oregon. Christian 11-786." The left side of the negative is discolored.