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You searched for Genre Photographs Remove constraint Genre: Photographs Creator Metcalf, Edi Remove constraint Creator: Metcalf, Edi Date 1991 Remove constraint Date: <span class='single'>1991</span>
The photographs document birthday celebrations. The images are numbered, but the subjects are unidentified.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and…