Solar greenhouse owned and built by Peter Howell, located at about the 8,500 level in the front , 05/1975.

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Photo credit: © PF-(usna) / Alamy / Afripics
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Keywords: .., agency, archives, boyd, boydnorton, documerica, environmental, environmentalprotectionagency, historic, history, nara:arcid=557324, national, norton, protection, usa, usnationalarchives