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Dr. C.K. Leith, Consultant on Minerals, Office of Production Management (OPM). Formerly professor in Geology at University of Wisconsin (still)
Public domain

Dr. C.K. Leith, Consultant on Minerals, Office of Production Management (OPM). Formerly professor in Geology at University of Wisconsin (still)

Dixon, Royden, United States. Office For Emergency Management · 1940-01-01 · photo, print, drawing

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

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film negativesunited states
Credit lineDr. C.K. Leith, Consultant on Minerals, Office of Production Management (OPM). Formerly professor in Geology at University of Wisconsin (still). 1940-01-01. Dixon, Royden, United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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