Album Caption: Included shales in porphyry mountain, head of National Creek. Alaska. Published in U.S. Geological Survey Bulletin 448, plate XI-A. 1911.
Summary
Album Caption: Included shales in porphyry mountain, head of National Creek. Alaska.
Published in U.S. Geological Survey Bulletin 448, plate XI-A. 1911.
Image located in U.S. Geological Survey Photographic Library, Capps, S.R. Collection album, Volume 1, no.115.
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