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Left to right: unidentified woman, illustrator Lindsay L. Field, Sam Hinton, and unidentified man at work in the Training Aid Unit of the University of California Division of War Research (UCDWR), a University of California WWII wartime laboratory located at Point Loma (San Diego), California. Sam Hinton was an American folk singer and marine biologist at Scripps Institution of Oceanography. January 1946.