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You searched for: Creator Geological Survey (U.S.) Remove constraint Creator: Geological Survey (U.S.) Date Created 1949 Remove constraint Date Created: 1949

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  • Lafayette : Indiana 1:25,000
  • Indiana 1:25,000, Indianapolis East
  • Indiana-Illinois Princeton quadrangle [1949 printing with minor corrections]
  • Total intensity aeromagnetic map of Benton County, Indiana relative to arbitrary datum