Original Caption: John Keyes, president of International Solarthermics Corporation, shown with the backyard solar heating system he developed. The a-frame structure contains the collectors (behind the glass plates), reflector plates (snowcovered plates on the ground) and storage system that includes several tons of one inch sized rocks to store heat inside the a-frame. This unit is connected to the home heating system by an insulated underground duct, 05/1975.
U.S. National Archives’ Local Identifier: 412-DA-14860
Photographer: Norton, Boyd
Nederland (Boulder county, Colorado) inhabited place
Persistent URL: research.archives.gov/description/557312
Repository: Still Picture Records Section, Special Media Archives Services Division (NWCS-S), National Archives at College Park, 8601 Adelphi Road, College Park, MD, 20740-6001.
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Access Restrictions: Unrestricted
Use Restrictions: Unrestricted