American physicist (1907-1991) credited with being the first ever to produce a transuranium element; he shared the Nobel Prize in Chemistry with Glenn Seaborg in 1951. Distinguished glossy 5 x 7 three-quarter length photo of McMillan in the lab, signed vertically in blue ballpoint. Reverse bears two University of California credit stamps. In fine condition, with a paperclip impression to the top edge.
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