Speaking at a Symposium in Rochester, 1964.
A shift in politics.
At Carleton's Centennial Science Symposium, 1966.
At the Centennial Science Symposium, October 1966.
Chatting with his successor, President John W. Nason, at a reception in Gould's honor, fall 1966.
Beside statue of Admiral Byrd at Antarctica's McMurdo Station, during 1969 trip.
South Pole, November 29, 1969.