Negative of a photographic postcard showing Rooster Rock on the Santiam Highway near Sweet Home, Oregon. Several ladders run up the side of the rock to a lookout structure near the top. Handwriting on negative reads, "Rooster Rock - South Santiam Highway, Oregon. Christian S-269."

Negative of a photographic postcard showing the South Santiam River flowing through a forested landscape. Taken from the shore of the river. There are large rocks in the river. Handwriting on negative reads, "Rapids - South Santiam near Cascadia. Christian S-148A."

Negative of a photographic postcard showing the Cascadia Ranger Station in Cascadia, Oregon. Handwriting on negative reads, "Christian S-152."

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 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 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 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 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 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 the construction of the Detroit Dam in Detroit, Oregon. Taken from a nearby hillside, the view looks down on a dam that is halfway built across a river. A construction crew works on the dam. Handwriting on negative reads, "Detroit Dam Construction - Detroit, Ore. Christian S-129."

Negative of a photographic postcard showing the construction of the Detroit Dam in Detroit, Oregon. Handwriting on negative reads, "Detroit Dam Construction - Detroit, Ore. Christian S-77."