View of Cape Horn across the river on the Washington side of the Columbia River Gorge, taken from Bridal Veil, Oregon during the winter storm of 1884-1885. This plate is part of an album of Watkin’s New Series photographs originally owned by Charles H. Prescott, manager of the Oregon Railroad and Navigation Co.

View of Castle Rock, also known as Beacon Rock, on the Washington side of the Columbia River Gorge. Photo taken from up river on the Oregon side of the gorge. Railroad tracks in the foreground.

Boudoir card of the Upper Cascade Rapids on the Columbia River. A structure overlooks the rapids. A railway is also visible in the background. Photograph is inscribed incorrectly with the date "1867."

Boudoir card of the Upper Cascade Rapids on the Columbia River. A railway is visible in the background.

Boudoir card of the Upper Cascade Rapids on the Columbia River.

Boudoir card of islands in the Columbia River, near the Upper Cascade Rapids. Part of a railroad is visible in the foreground. Buildings are visible on the opposite shore. Photograph is inscribed incorrectly with the date "1867."

Left panel of Carleton Watkins' 3-part panorama of Portland, Or., 1867. Mount St. Helens is in the background.

Left panel of Carleton Watkins' 3-part panorama of Portland, Or., 1867. Mount St. Helens is in the background. Duplicate of Mammoth 402, on a different mount.

View of Cape Horn on the Washington side of the Columbia River Gorge. Taken from the east at John Stevenson’s property. Log cabin and fence in the foreground. OHS Collection includes 1 duplicate of this mammoth plate on a different mount, with the alternate title, "Cape Horn On Columbia River."

View of Castle Rock, also known as Beacon Rock, on the Washington side of the Columbia River Gorge. OHS Collection includes 2 duplicates of this mammoth plate on different mounts.

View of the Middle Block House, also known as Fort Rains, on the Columbia River. OHS Collection includes 1 duplicate of this mammoth plate on a different mount.

View looking southwest down the Columbia River from the Middle Block House, also known as Fort Rains, in the Washington Territory. The Eagle Creek area is visible in the distance on the Oregon side of the river.

View of the Upper Block House, also known as Fort Lugenbeel, on the Columbia River in the Columbia River Gorge. Other buildings and a railroad bridge are also visible. OHS Collection includes 2 duplicates of this mammoth plate on different mounts. One duplicate bears Watkins' signature on the back and has the alternate title, "Upper Blockhouse, Cascades."

View of Cape Horn on the Washington side of the Columbia River Gorge, looking up the Columbia River. Loose, cropped duplicate plate in 5/1. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

Photograph showing 2 female mountaineers preparing to traverse a creek at the base of a waterfall. They wear long dresses and hats. Handwritten note on the back of the print reads, "Mazamas, Mt. Adams."

Photograph showing 2 mountaineers standing on the edge of a body of water below the summit of Mount Adams in Washington. Adams Glacier is visible behind them. Handwritten note on the back of the print reads, "Mazamas, Mt. Adams."

Photograph showing 9 mountaineers sitting in a grassy area below the summit of Mount Adams in Washington. Handwritten note on the back of the print reads, "Bird Creek Meadow at timber line of Mount Adams. 12,307 feet elevation. Group of mountain climbers in foreground. Photo by C.C. Hutchins." Handwritten label on the front of the print indicates a copyright by C.C.H.

Photograph showing 5 men in a horse-drawn wagon. Two of them hold fishing poles. A boat is attached to the back of the wagon. One man stands on the wheel of the wagon to enter the boat. Another man stands in the boat holding a paddle. Everyone looks at the camera.

Platinum print of the Columbia River with mountains visible in the distance. The photograph has been attributed in publications to both Sarah Hall Ladd and LIly E. White.

Platinum print of the Columbia River with mountains and fog visible in the distance. The photograph has been attributed in publications to both Sarah Hall Ladd and LIly E. White.

Platinum print of mist on the Columbia River. Attributed to Sarah Hall Ladd.

Platinum Print of a posed portrait of a Klickitat woman identified by Lily E. White as Sally Waukiagus. She is seated and holding a basket. Alternative spellings of her name include Waukuaquas and Waukiagues. Handwritten inscription on the back of the image reads, "Sally Waukiagus - Klickitat." Signed, "Lily E. White," on the matting below the lower right corner of the print.

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 waves at Long Beach, Washington. Handwritten inscription on the back of the print reads, "Long Beach - Pacific Ocean." A stamp in the lower left corner of the print reads, "Copyright 1903(?) Will H. Walker.

Platinum print of the C.N.R.R. track on an embankment along the Klickitat River. Handwritten inscription on the back of the print reads, "C. and N. R. R. - Klickitat River." Signed, "Lily E. White," in the lower right corner of the print.

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.

Platinum Print of a houseboat moored at the base of Castle Rock (today known as Beacon Rock) on the Columbia River. Handwritten inscription from the back of the print reads, "Castle Rock - Columbia." Signed, "Copyrighted 1902, Lily E. White," in the lower right corner of the print.

Platinum print of mist on a hillside viewed from across the Columbia River. Handwritten inscription on the back of the print reads, "Scarf of Mist - Columbia." This print is sometimes also printed as, "Up the Columbia." Signed, "Lily E. White." in the lower right corner of the print.