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You searched for: Author Henderson, John R. Remove constraint Author: Henderson, John R. Subject Geological maps Remove constraint Subject: Geological maps Data type Image Remove constraint Data type: Image
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1. Total intensity aeromagnetic map of Benton County, Indiana: relative to arbitrary datum

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...

2. Total intensity aeromagnetic map of Dubois County, Indiana: relative to arbitrary datum

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...