Arkivism
Dr. Frederick G. Cottrell, Director, Bureau of Mines
Public domain

Dr. Frederick G. Cottrell, Director, Bureau of Mines

1920-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

Subjects
glass negatives
Credit lineDr. Frederick G. Cottrell, Director, Bureau of Mines. 1920-01-01. National Photo Company Collection, Library of Congress. Public domain.
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