Duplicate of Stereograph 1275, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s steamship “Oneonta” on the Columbia River. The Upper Cascades in Skamania County, Washington Territory is in the background, 1867.

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

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.

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.

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

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

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 1275, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s steamship “Oneonta” on the Columbia River. The Upper Cascades in Skamania County, Washington Territory is in the background, 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.

Stereograph of the Oregon Steam Navigation Co.’s steamship “Oneonta” on the Columbia River. The Upper Cascades in Skamania County, Washington Territory is in the background, 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 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 of Oregon Steam Navigation Co. steam locomotive heading west out of the Upper Cascades, 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.

Duplicate of Stereograph 1266, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s railroad tracks at the Upper Cascades, Skamania County, Washington Territory, looking west down the Columbia River from the Upper Block House, also known as Fort Lugenbeel, 1867.

Duplicate of Stereograph 1266, on a different mount. Stereograph of the Oregon Steam Navigation Co.’s railroad tracks at the Upper Cascades, Skamania County, Washington Territory, looking west down the Columbia River from the Upper Block House, also known as Fort Lugenbeel, 1867.

Stereograph of the Oregon Steam Navigation Co.’s railroad tracks at the Upper Cascades, Skamania County, Washington Territory, looking west down the Columbia River from the Upper Block House, also known as Fort Lugenbeel, 1867

Duplicate of Stereograph 1265, on a different mount. Stereograph view of an Oregon Steam Navigation Co. steam locomotive approaching from the east on the company’s portage railroad around the Cascades of the Columbia River, Skamania County, Washington Territory, 1867. South of the locomotive are ruins of the High Bridge, built by the military in 1860 to cross the Hamilton Creek drainage, and the Chenoweth/Putnam tramway.

Stereograph view of an Oregon Steam Navigation Co. steam locomotive approaching from the east on the company’s portage railroad around the Cascades of the Columbia River, Skamania County, Washington Territory, 1867. South of the locomotive are ruins of the High Bridge, built by the military in 1860 to cross the Hamilton Creek drainage, and the Chenoweth/Putnam tramway.

Duplicate of Stereograph 1265, on a different mount. Stereograph view of an Oregon Steam Navigation Co. steam locomotive approaching from the east on the company’s portage railroad around the Cascades of the Columbia River, Skamania County, Washington Territory, 1867. South of the locomotive are ruins of the High Bridge, built by the military in 1860 to cross the Hamilton Creek drainage, and the Chenoweth/Putnam tramway.

Stereograph of the Oregon Steam Navigation Co.’s railroad tracks at the Upper Cascades, Skamania County, Washington Territory, looking west down the Columbia River from the Upper Block House, also known as Fort Lugenbeel, 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.

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.

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 view of an Oregon Steam Navigation Co. steam locomotive approaching from the east on the company’s portage railroad around the Cascades of the Columbia River, Skamania County, Washington Territory, 1867. South of the locomotive are ruins of the High Bridge, built by the military in 1860 to cross the Hamilton Creek drainage, and the Chenoweth/Putnam tramway.

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.