Right panel of Carleton Watkins' 3-part panorama of Portland, Or., 1867. Duplicate of Mammoth Plate 400, on a different mount. Condition note: Mt. Hood has faded and is no longer visible.

View of Oswego Iron Works, also known as the Oregon Iron Company, in Oswego, Oregon. Railway to transport ore is visible in the foreground.

View of Willamette Falls with the settlement of Canemah in the background. Taken from the west shore. Lower right imprint reads: "Taber Photo, San Francisco." OHS Collection includes 1 duplicate of this mammoth plate on a different mount, with the alternate title, "The Willamette Falls, Oregon."

View of Oregon City across the Willamette River. Steamboat docks are visible on the river. Left panel of 3-part panorama.

View of Willamette Falls and part of Oregon City, taken from the east shore on a bluff above Oregon City. Imperial Flour Mills and Oregon Woolen Mills are both visible. OHS Collection includes 1 duplicate of this mammoth plate on a different mount.

View of the Imperial Flour Mills on the left, and the Oregon Woolen Mills on the right. In the foreground, five men on a boat look up at the camera, including a man on the stern who tips his hat.

View of Multnomah Falls on the Oregon side of the Columbia River Gorge. OHS Collection includes 1 duplicate of this mammoth plate on a different mount.

View of Multnomah Falls on the Oregon side of the Columbia River Gorge. OHS Collection includes 2 duplicates of this mammoth plate on different mounts.

Distant view of Castle Rock, also known as Beacon Rock, across the Columbia River on the Washington side of the Columbia River Gorge. Taken from the McCrary farm in Oregon. OHS Collection includes 1 duplicate of this mammoth plate on a different mount.

Two men pose on the S.G. Reed locomotive, a steam locomotive with one rail car attached. No title written or printed on plate.

A steam locomotive operated by the Oregon Steam and Navigation Company on railroad tracks in the Washington Territory of the Columbia River Gorge. Upper Block House, also known as Fort Lugenbeel, is on the left while a steamboat on the Columbia River is visible in the distance on the right.

View of islands in the Columbia River in the Columbia River Gorge. A railroad bridge crosses the river to one island in the foreground.

View of islands in the Columbia River in the Columbia River Gorge.

View of the Oregon Steam and Navigation Company's operations at The Dalles, Oregon. The steamboat "Oneonta" is tied to the wharf.

View of The Dalles, taken from the Oregon side of the Columbia River, looking east. No title on matted plate.

View of Mt. Adams, taken from Sunset Hill, south of The Dalles. The Columbia River is in the foreground.

View of rapids on the Columbia River in the Columbia River Gorge, looking east up the river. Railroad tracks in the foreground.

View of Castle Rock, also known as Beacon Rock, on the Washington side of the Columbia River Gorge. Photo taken from the Oregon side of the Columbia River Gorge. There are 2 structures, possibly houses, on the shore of the Columbia River. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of Multnomah Falls. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of Horsetail Falls in the Columbia River Gorge. Misidentified on plate as Oneonta Falls. Loose duplicate in 5/4. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of the Columbia River and cliffs in the Columbia River Gorge. Loose duplicate plate in 5/6. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

A stream flows past rock bluffs. Taken from Tunnel No. 3 on the Columbia River Gorge. Loose duplicate plate in 5/6. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

Railroad tracks run along the base of a rock bluff bordering the Columbia River. Tunnel No. 3 is visible in the distance. Railroad crossing in foreground. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of the Columbia River at the passage of the Dalles. Loose duplicate plate in 7/1. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

A view of the summit of Mount Hood, with the ascent from Hood River. Loose duplicate plate in 5/7. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

Men at work clearing snow from the track of the Oregon Railway & Navigation Company’s railroad line along the Oregon side of the Columbia River Gorge 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.

Men at work clearing snow from the track of the Oregon Railway & Navigation Company’s railroad line along the Oregon side of the Columbia River Gorge 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.

A steam locomotive on the railroad tracks at Bridal Veil on the Oregon side of the Columbia River Gorge 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.