This photograph was taken by George M. Bergman. Bergman and User:George Ho have digitized some of Bergman's photographs and released them under the licenses below.
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{{Information |Description=Old photo of Derrick Henry Lehmer at Berkeley, California; scanned without modifications |Source=Scanned via Epson Perfection V370; see also https://opc.mfo.de/detail?photo_id=5507 |Date=1984 |Author={{Creator:George Bergman}} |Permission={{George Bergman permission}} |other_versions=<gallery>File:Derrick Henry Lehmer.jpg|Another copy released under only GFDL</gallery> }} Category:Derrick Henry Lehmer
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