Candid photograph of Khadduri at approximately 45 years old, speaking with a student.

Candid photograph of McElroy at approximately 42 years old with bottles of fireflies.

Candid photograph of Trefethen at approximately 35 years oak and Billingsle, who is approximately 30 years old in an office.

Candid photograph of Johnson at approximately 50 years old, lecturing to a class.

Candid photograph of Johnson at approximately 50 years old, lecturing to a class.

Candid photograph of Johnson at approximately 50 years old at his desk.

Candid photograph of Spitzer at approximately 65 years old smoking a cigarette in his study.

Candid photograph of Spitzer at approximately 65 years old gesturing with his hand in his study.

Candid photograph of Spitzer at approximately 65 years old lighting a cigarette.

Candid photograph of Spitzer at approximately 65 years old smoking a cigarette.