Public domain
Segments of penstock pipe which will be used to transport water from reservoir formed by Shasta Dam to hydroelectric turbines. Notice the worker on top pipe; he is welding segments together. Shasta County, California
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineSegments of penstock pipe which will be used to transport water from reservoir formed by Shasta Dam to hydroelectric turbines. Notice the worker on top pipe; he is welding segments together. Shasta Co. 1941-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.