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R.C. Allen, Consultant, Ferrous Minerals and Alloys, Production Division (right), and Dr. C.K. Leith, Consultant on Minerals, Office of Production Management (OPM). Formerly professor in Geology at University of Wisconsin (still)

R.C. Allen, Consultant, Ferrous Minerals and Alloys, Production Divisi...

Public domain photograph - historical image of Wisconsin, United States, free to use, no copyright restrictions image - Picryl description

R.C. Allen, Consultant, Ferrous Mineral and Alloys Production Division (right), and Dr. C.K. Leith, Consultant on Minerals, Office of Production Management (OPM). Formerly professor in Geology at the University of Wisconsin (still)

R.C. Allen, Consultant, Ferrous Mineral and Alloys Production Division...

Public domain photograph - historical image of Wisconsin, United States, free to use, no copyright restrictions image - Picryl description

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

Dr. C.K. Leith, Consultant on Minerals, Office of Production Managemen...

Public domain photograph - historical image of Wisconsin, United States, free to use, no copyright restrictions image - Picryl description

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

Dr. C. K. Leith, Consultant on Mineral, Office of Production Managemen...

Public domain photograph - historical image of Wisconsin, United States, free to use, no copyright restrictions image - Picryl description

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

Dr. C.K. Leith, Consultant on Minerals, Office of Production Managemen...

Public domain photograph - historical image of Wisconsin, United States, free to use, no copyright restrictions image - Picryl description