When did Horizon Season 11 Episode 27 air?
Horizon Season 11 Episode 27 aired on November 4, 1974.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 11 · Episode 27
The First Signs of Washoe
Nov 4, 1974·1h
Horizons reviews the scientific work of Americans in the field of research in communication with animals.
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Direct answers for episode-level questions and details.
How long is Horizon Season 11 Episode 27?
This episode runs for approximately 60 minutes.
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