Cabinet officers

Secretary of the Interior Oscar Chapman (right) poses with Assistant Secretary of the Interior Joel D. Wolfsohn (fourth from right) and unidentified family after Wolfsohn's swearing-in ceremony.

Guests seated on the rostrum at the dedication ceremony for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Pictured: Ann (Mrs. Oscar) Chapman (left); and Secretary of the Interior Oscar Chapman (second from left). All others unidentified.

Secretary of the Interior Oscar Chapman (at podium) speaks during the dedication ceremony for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Also pictured: Ann (Mrs. Oscar) Chapman (front row, left). All others unidentified.

Facing camera, left to right: Charles Hansen; Barnard Houtchens, President, Greeley Chamber of Commerce; Secretary of the Interior Oscar Chapman; and Price Hopkins, Mayor of Greeley, at a dedication banquet for the Colorado Big Thompson in Greeley, Colorado. All others unidentified.

View of the rostrum and guests at the dedication ceremony for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Pictured on rostrum: Ann (Mrs. Oscar) Chapman (front row, left); Secretary of the Interior Oscar Chapman (front row, second from left). All others unidentified.

View of speakers and guests at the dedication ceremony for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Pictured, rostrum: Ann (Mrs. Oscar) Chapman (front row, left); Secretary of the Interior Oscar Chapman (front row, second from left). All others unidentified.

View from the speakers' platform of the crowd of attendees at the Andrew W. Mellon Memorial Fountain dedication ceremony. Secretary of the Interior Oscar Chapman is at the podium (back to camera). All others are unidentified.

An unidentified man speaks during the dedication ceremony for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Also pictured: Ann (Mrs. Oscar) Chapman (front row, left); Secretary of the Interior Oscar Chapman (front row, second from left), and Chief Justice of the Supreme Court Fred Vinson (front row, sixth from left). All others unidentified.

View of speakers and guests at the dedication for the Andrew W. Mellon Memorial Fountain in Washington, D.C. Pictured, rostrum: Ann (Mrs. Oscar) Chapman (front row, left); Secretary of the Interior Oscar Chapman (front row, second from left). All others unidentified.

Charles Hansen (left) and Secretary of the Interior Oscar Chapman at the dedication of the Colorado Big Thompson project in Greeley, Colorado. Others in background unidentified.