Undaunted: The Forgotten Giants of the Allegheny Observatory
- Ел: 2012
- Ил: United States of America
- Жанр: Documentary
- Студия:
- Төп сүз: aviation, astronomy, observatory
- Директор: Dan Handley
- Ролик: Cain Alexander, Kurt Bell, Robert R. Bell, Len Caric, David Conrad
