Dam construction; Dams; Scaffolding; Men; Construction workers; Trees;
Black and white image showing construction on the Ariel Dam. In the distance are trees along the top of the hillside. In the upper right of the picture is a wooden structure consisting of scaffolding and...
Rivers; Bridge construction; Construction workers; Progress photographs; Road construction;
A black and white image showing construction of the Interstate Bridge across the Columbia in Portland. Men and construction equipment are visible in the image. Wooden scaffolding and utility poles are...