Sagan dictating a draft NASA exobiology grant proposal — discusses amino acids, tholins, and methane in Titan's atmosphere; representative of how Sagan composed first drafts.

Sagan's second Royal Institution Christmas Lecture in the 1977 'Planets' series, on the giant planets and the search for life.

The inaugural Thompson Leadership Lecture at IMSA — Sagan on comets and the origin of life, calling the academy 'a gift from the people of Illinois to the human future.'