Candid photograph of McElroy at approximately 50 years old.

Candid photograph of Ingle at approximately 55 years old, sitting in front of a bookshelf.

Candid photograph of Ingle at approximately 55 years old, sitting in front of a bookshelf.

Candid photograph of Dr. Hardie at work in his laboratory.

Candid photograph of Cloos performing a simulation of a volcanic eruption.