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• Identified! [Testing airplane lenses used in map making at the U.S. Bureau of Standards, Washington, D.C.] (LOC)

  • Uploaded by: The Library of Congress
  • License: No known copyright restrictions
  • 18 comments
  • 8 favorites
  • 19,159 views
  • Date taken: 1934
  • Date uploaded: 2015-10-02
  • Tags: libraryofcongress, dc:identifier=httphdllocgovlocpnphec37556, xmlns:dc=httppurlorgdcelements11, lenstesting, bureauofstandards, aerialmapping, determining, focallength, distortion, mysterysolved, frankacase
  • Visibility: public