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:
Summit C.P.R.R. Sierras NYPL bGF B. en Possibly by Russell nypl org Scan by NYPL Summit Sierras Central Pacific Railroad Company Railroads construction maintenance Rock formations Mountain roads The Miriam and Ira Wallach Division of Art Prints and Photographs Photography Collection ecdecefabdabc GFB Robert Dennis collection of