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 |
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| License | No known copyright restrictions |
| Comments | 0 |
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| Views | 7,488 |
| Date taken | 1975-05 |
| Date uploaded | 2012-04-10 |
| Tags | usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=557332 |
| Visibility | public |