The Cascades rapids of the Columbia River. The blockhouse at Fort Cascades is in the background. Loose duplicate plate in 7/1. This plate is part of Carlton Watkin's "Sun Sketches of Columbia River Scenery" album.

View of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. Castle Rock, also known as Beacon Rock, is visible in the distance.

Stereograph of a blacksmith at the Lower Cascades, Skamania County, Washington Territory, 1867.

Stereograph of a blacksmith at the Lower Cascades, 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 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 teachers and children at the school at the former garrison building at Fort Cascades, Cascades, Skamania County, Washington Territory, 1867.

Stereograph of teachers and children at the school at the former garrison building at Fort Cascades, Cascades, Skamania County, Washington Territory, 1867.

Stereograph of teachers and children at the school at the former garrison building at Fort Cascades, Cascades, Skamania County, Washington Territory, 1867.

Stereograph of teachers and children at the school at the former garrison building at Fort Cascades, Cascades, Skamania County, Washington Territory, 1867.

Duplicate of Stereograph 1257, on a different mount. Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”

Duplicate of Stereograph 1257, on a different mount. Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”

Duplicate of Stereograph 1257, on a different mount. Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”

Duplicate of Stereograph 1257, on a different mount. Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”

Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”

Stereograph of the former garrison at Fort Cascades, near the Cascades townsite on the Columbia River in Skamania County, Washington Territory, 1867. This stereograph has also been referred to as “Rapids Indian Blockhouse.”