1949. Dempsey, W. J., Duffner, R. T., and Henderson, John R. Includes text and location map. Scale 1:63360. United States Department of the Interior, Geological Survey; aeromagnetic survey 1947 by W.J. Dempse... For sale by United States Geological Survey.
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1950. Henderson, John R. and Meuschke, J. L. Includes text and location map. Scale approximately 1:63,360. Survey by J.R. Henderson and J.L. Meuschke; compilation directed by J.R. Henderson; D... United States Geological Survey.