This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Portion of the field forces of the Bureau of Reclamation employed on surveys and inspection at Hoover Dam. Field... NARA . Ralph Lowry Principal Assistant to Construction Engineer Walker Young on the Boulder Canyon Project among employees of the Bureau of Reclamation Scope and content Photograph from Volume Two of series of photo