View of the Tooth Bridge, part of the Oregon Steam Navigation Co.'s Oregon Portage Railroad in the Columbia River Gorge. The Cascade Mountains rise in the background. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of the Tooth Bridge, part of the Oregon Steam Navigation Co.'s Oregon Portage Railroad in the Columbia River Gorge. The bridge crosses Eagle Creek in the distance. The calm waters of the Columbia River Channel reflect surrounding trees. Loose duplicate plate in 5/2. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

Railroad tracks belonging to the Oregon Steam Navigation Co. at Eagle Creek Crossing in the Columbia River Gorge. Bradford Island is visible across the Columbia River. Loose duplicate plate in Box 5. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

A map of the Columbia River through the Cascade Range. The map shows the route of the Oregon Steam Navigation Company's Portage Railroad [Cascade Railroad] and Oregon Portage Railway [Ruckle Road]. The depth is shown in soundings.

Stereograph of an Oregon Steam Navigation Co. employee standing on one of the company’s Vulcan steam engines, the “Betsey Baker,” at the Lower Cascades, Skamania County, Washington Territory, 1867.

Stereograph of the Oregon Steam Navigation Co.’s railroad yard at the Lower Cascades, Skamania County, Washington Territory, 1867.

Stereograph of the Oregon Steam Navigation Co.’s railroad yard at the Lower Cascades, Skamania County, Washington Territory, 1867.

Duplicate of Stereograph 1264, on a different mount. Stereograph of Oregon Steam Navigation Co.’s railroad tracks west of the Middle Block House, also known as Fort Rains, on the Columbia River, Skamania County, Washington Territory, 1867.

Stereograph of the Oregon Steam Navigation Co.’s steamship “Oneonta” on the Columbia River near the Upper Cascades in Skamania County, Washington Territory, 1867.

Stereograph of Oregon Steam Navigation Co. steam locomotive heading west out of the Upper Cascades, Skamania County, Washington Territory, 1867.

Duplicate of Stereograph 1270, on a different mount. Stereograph of Oregon Steam Navigation Co. steam locomotive heading west out of the Upper Cascades, Skamania County, Washington Territory, 1867.

Duplicate of Stereograph 1270, on a different mount. Stereograph of Oregon Steam Navigation Co. steam locomotive heading west out of the Upper Cascades, Skamania County, Washington Territory, 1867.

Stereograph view of the Upper Cascades on the Columbia River, Skamania County, Washington Territory, 1867. At right is the dock for the Oregon Steam Navigation Co.’s steamships.

Duplicate of Stereograph 1295, on a different mount. Stereograph view of the home of Joseph Bailey, superintendent of the Oregon Steam Navigation Co.’s Oregon Portage Railroad and sawmill, at Eagle Creek in the Columbia River Gorge, 1867. The man in the black jacket, hat, and white shirt on the railroad bridge is Joseph Bailey. John Stevenson is sitting on the mule-drawn cart with another unidentified man.

Duplicate of Stereograph 1297, on a different mount. Stereograph depicting The Tooth Bridge and the tracks of the Oregon Portage Railroad, Columbia River Gorge, 1867.

Duplicate of Stereograph 1297, on a different mount. Stereograph depicting The Tooth Bridge and the tracks of the Oregon Portage Railroad, Columbia River Gorge, 1867.

Stereograph of the Tooth Bridge, located west of Eagle Creek in the Columbia River Gorge and part of the Oregon Steam Navigation Co.’s Oregon Portage Railroad around the rapids of the Cascades of the Columbia, 1867. The mule-drawn cart approaching the camera on the tracks is carrying John Stevenson and Joseph Bailey, superintendent of the Oregon Portage Railroad.

Stereograph of the Tooth Bridge, located west of Eagle Creek in the Columbia River Gorge and part of the Oregon Steam Navigation Co.’s Oregon Portage Railroad around the rapids of the Cascades of the Columbia, 1867. The mule-drawn cart approaching the camera on the tracks is carrying John Stevenson and Joseph Bailey, superintendent of the Oregon Portage Railroad.

Duplicate of Stereograph 1308, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s machine shop at The Dalles, Oregon, 1867.

Duplicate of Stereograph 1309, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s office on the Columbia River at The Dalles, Oregon, 1867.

Stereograph of officer’s quarters at the Oregon Steam Navigation Co.’s headquarters in The Dalles, Oregon, 1867.

Stereograph of the Oregon Steam Navigation Co.’s steam locomotive “D.F. Bradford” at The Dalles, Oregon, 1867.

Stereograph of the Oregon Steam Navigation Co.’s warehouse at Celilo, Columbia River Gorge, Oregon, 1867.

Duplicate of Stereograph 1330, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s warehouse at Celilo, Columbia River Gorge, Oregon, 1867.

Stereograph of the Oregon Steam Navigation Co.’s dry dock on the Columbia River, Oregon, 1867.

Stereograph of the Oregon Steam Navigation Co.’s dry dock on the Columbia River, Oregon, 1867.

Stereograph of the Oregon Steam Navigation Co.'s docks and warehouse at Celilo, Columbia River Gorge, 1867.

Stereograph of woman and children at the Oregon Steam Navigation Co.'s portage railroad around the Cascades of the Columbia River in the Cascades townsite, Skamania County, Washington Territory, 1867