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Placing main pinion shafts on the draw span of the SP&S Columbia River Bridge, Vancouver, Washington, October 25, 1907. This is a postcard image.

Erecting the draw span on the SP&S Columbia River Bridge at Vancouver, Washington, October 25, 1907. This is a postcard image.

Riveting the draw span of the SP&S Columbia River Bridge at Vancouver, Washington, October 21, 1906. This is a postcard image.

Erecting the draw span on the SP&S Columbia River Bridge, October 16, 1907. This is a postcard image.

Side view of the 185 foot-6 inch span connecting to the draw span of the SP&S Columbia River Bridge, Vancouver, Washington, October 16, 1907. This is a postcard image.

A view looking south from Vancouver, Washington during erecting of the SP&S Columbia River Bridge, October 10, 1906. This is a postcard image.

Side view of the draw span of the SP&S Columbia River Bridge at Vancouver, Washington, November 7, 1907. This is a postcard image.

Color postcard view of the SP&S Columbia River Bridge looking south with a northbound passenger train, postmarked November 19, 1917. This is a postcard image.

Power riveter at work on the SP&S Columbia River Bridge at Vancouver, Washington, November 19, 1907. This is a postcard image.

Power riveter at work on the SP&S Columbia River Bridge at Vancouver, Washington, November 19, 1907. This is a postcard image.