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Start Over Subjects National Library of Medicine (U.S.). Index Section. ✖Remove constraint Subjects: National Library of Medicine (U.S.). Index Section. Titles [Yvonne Scott sitting at a punch card machine] ✖Remove constraint Titles: [Yvonne Scott sitting at a punch card machine] Genre Portraits ✖Remove constraint Genre: Portraits Copyright Public domain ✖Remove constraint Copyright: Public domain

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