ALTERATIONS AND NEW CONSTRUCTION AT THE ALTITUDE WIND TUNNEL AWT
This photograph shows both the 1-thick inner shell to the right and the thin outer shell to the left during the conversion of the Altitude Wind Tunnel (AWT) to the SPC in 1961.
Image Credit: NASA/ARDEN WILFONG
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https://www.nasa.gov/image-detail/grc-1961-c-57712/
Image CreditNASA/ARDEN WILFONG
Size2818x2208px