1. Total intensity aeromagnetic map of Dubois County, Indiana: relative to arbitrary datum Maps maps Indiana University indiana-university 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.