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• John Keys, president of International Solarthermics Corporation, beside a cutaway model of the backyard solar heating system developed by his company..., 05/1975.

  • Uploaded by: U.S. National Archives
  • License: No known copyright restrictions
  • 0 comments
  • 1 favorite
  • 7,488 views
  • Date taken: 1975-05
  • Date uploaded: 2012-04-10
  • Tags: usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=557332
  • Visibility: public