Candid photograph of Kouwenhoven at 85 years old.

Candid photograph of Kouwenhoven at 85 years old.

Candid photograph of Kouwenhoven at 85 years old.

Candid photograph of Hoffman in the field pointing to a rock formation.

Candid photograph of Harris in academic robes on Commemoration Day.

Candid photograph of Harris in academic costume on Commemoration Day.

Candid photograph of Eisenhower at approximately 68 years old sitting behind desk.

Candid photograph of Eisenhower at approximately 68 years old sitting behind desk.

Candid photograph of Eisenhower at approximately 68 years old giving a speech at Association dinner.

Candid photograph of Eisenhower at approximately 68 years old giving a speech at Association dinner.