A river near Yellowstone National Park, likely the Yellowstone River. Caption from negative sleeve reads, "Yellowstone? (River). S-50, LW2-3C."

A river at the base of a deep gorge near Yellowstone National Park, likely the Yellowstone River. Caption from negative sleeve reads, "Yellowstone? (Gorge), S-51, LW2-3D."

A river at the base of a deep gorge near Yellowstone National Park, likely the Yellowstone River. Caption from negative sleeve reads, "Yellowstone? (River), S-55, LW2-3H."

A mineral pool at Yellowstone National Park. Caption from negative sleeve reads, "Landscape, S-63, LW2-20.

Mineral deposits on a ridge at Yellowstone National Park. Caption from negative sleeve reads, "Yellowstone? (Rocky Ridge), S-52, LW2-3E."

A geyser erupting at Yellowstone National Park. Caption from negative sleeve reads, "Yellowstone? (Geyser), S-53, LW2-3F."

A geyser erupting at Yellowstone National Park. Several people and a wagon are visible in the distance on the far side of the mineral pool. Caption from negative sleeve reads, "Yellowstone? (Geyser), S-54, LW2-3G."

A geyser erupting at Yellowstone National Park. Caption from negative sleeve reads, "Landscape - Geyser?, R50, LW2-31."

A weeping Japanese cherry tree in bloom. Photograph likely taken in the garden of the Charles Elliott Ladd and Sarah Hall Ladd residence. Caption from the negative sleeve reads, "Small Weeping Japanese Cherry, 1903, S6, LW3-6."

Photograph of a waterfall, likely Lower Yellowstone Falls at Yellowstone National Park. Caption from negative sleeve reads, "Yellowstone? (Falls), S-48, LW2-3A."

Clean laundry hanging from lines on the deck of Lily E. White's houseboat, the Raysark. Beacon Rock is visible in the distance.

View from the deck of Lily E. White's houseboat, the Raysark. A log raft and two row boats are tied to the side of the boat. Sarah Hall Ladd and a man, possibly Charles Elliott Ladd, sit on the raft. An American flag is visible at the back of the boat. A settlement and two train cars are visible on the far shore. Caption from negative sleeve reads, "View from Houseboat Deck, R-38, LW-38."

Platinum print of Upper Cape Horn with the Columbia River visible in the distance. Handwritten inscription on the back of the print reads, "Upper Cape Horn - Near Celilo - Columbia." Signed, "Lily E. White," in the lower right corner of the print.

Platinum print of the Columbia River with mountains partially obscured by fog in the distance. Attributed to Lily E. White. This photograph is taken from the same vantage point and likely near the same time as the photograph on Plate 8 of Album 712.

Platinum print of the Columbia River with mountains partially obscured by fog in the distance. Signed, "Lily E. White," on the matting below the lower right corner of the print. This photograph is taken from the same vantage point and likely near the same time as the photograph on Plate 15 of Album 201.

Platinum print of the submerged forest on the bank of the Columbia River. Attributed to Sarah Hall Ladd.

Platinum print of Mount Hood. Attributed to Lily E. White.

Platinum print of a fish weir on the Columbia River.

Platinum print of a river and surrounding rock formations near the columbia River Gorge.

Platinum print of rock formation in the Columbia River. The photograph has been attributed to both Sarah Hall Ladd and Lily E. White.

Platinum print of the Columbia River with a train trestle visible in the distance. Attributed to Sarah Hall Ladd.

Platinum print of the Columbia River with a fish weir visible in the distance. Attributed to Lily E. White.

Platinum print of Lily E. White's houseboat, the Raysark, moored near Castle Rock (today known as Beacon Rock) on the Columbia River. Attributed to Sarah Hall Ladd.

Platinum print of the Columbia River looking west from White Salmon, Washington.

Two unidentified women standing beside a geyser at Yellowstone National Park. Caption from negative sleeve reads, "Yellowstone? (2 Ladies), S-49, LW-2/3B."

Platinum print of an unidentified person standing in a rowboat on the Columbia River. Castle Rock (today known as Beacon Rock) is visible in the distance. Handwritten inscription on the back of the print reads, "Twilight on the Columbia - Castle Rock in the Distance." This photograph has been attributed to both Sarah Hall Ladd and Lily E. White. Signed, "Copyrighted by Lily E. White," in the lower right corner of the print.

A tree growing on the edge of a cliff. There is a large body of water visible below with a settlement on the opposite shore. Likely taken in the Columbia River Gorge. Caption from negative sleeve reads, "Landscape - tree, water, R-68, LW2-49."

Two unidentified men on a raft loaded with wood. A rowboat is tied to the back of the raft. Several buildings and a train car are visible on the riverbank in the distance. Likely taken on the Columbia River. Caption on negative sleeve reads, "The Return with Wood, R-1, LW-1." Image note: appears to be from the same series as image LW-7.