By the way, at one time footage of this episode was exhibited, in an endless loop, in the National Air and Space Museum of the Smithsonian, as a part of the "Life in the Universe" exhibition
, along with the Enterprise
herself. I know because I was there and saw it.
Do you mean back in the 1970s?
Yes. As stated in the link provided, that would be: July 1, 1976 – 1979.
At the moment, I don't have the exact date that I was there and saw that, but it was certainly before the summer of 1980, since that's when my camera was stolen. For other reasons, I can date it after Logan's Run
(1976) was released.