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Original drawing that Marge Bradner used for the cover of her book 'Seismic Summer: the story of eleven men and one woman sailing across the South Pacific to study the quivering sea floor' as she was writing it. Hugh Bradner, of Scripps Institution of Oceanography, along with ten other men and his wife Marge Bradner, made the first set of seismic background measurements in the deep waters across the Pacific Ocean. This expedition was called the Deep Ocean Seismic Expedition. August 5, 1963.

Original drawing that Marge Bradner used for the cover of her book 'Seismic Summer: the story of eleven men and one woman ...