Sonar instrument field-testing, Walden Pond (MA) - H. E. Edgerton, 1968

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Description: (curated)

Two motorboats on Walden Pond (MA) running sonar equipment field-testing, with nine people on board including H. E. Edgerton; Boston Whaler has a sign "GEODYNE DIVISION'. (CC)

HEE-SC-01559

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