Chapman, Oscar L. (Oscar Littleton), 1896-1978

From left to right: Senator Joseph C. O'Mahoney; Colorado Governor Lee Knous; and Secretary of the Interior Oscar Chapman at the Kiwanis Club of Denver luncheon at the Albany Hotel in Denver, Colorado. Those in background unidentified.

President Harry S. Truman (back to camera) greets Cabinet members at Washington National Airport, upon his return from a vacation in Key West, Florida. Facing him are, from left to right: Secretary of State Dean Acheson; Secretary of the Interior Oscar Chapman; and Secretary of Defense Louis Johnson. All others are unidentified.

Secretary of the Interior Oscar Chapman (left) and two unidentified men decorate a Christmas tree in the Department of the Interior.

Floyd Dotson, Chief Clerk, Department of the Interior (left) delivers the oath of office to Secretary of the Interior Oscar Chapman.

Secretary of the Interior Oscar Chapman (center) with unidentified women at the Department of the Interior.

Attendees of the National Christmas Tree lighting ceremony on the South Lawn of the White House. Pictured, left to right: unidentified; unidentified; William J. Dougherty, Assistant Director of Information, Department of the Interior; Secretary of the Interior Oscar Chapman; Ann (Mrs. Oscar) Chapman; and James Chapman. All others unidentified.

An unidentified girl speaks during the National Christmas Tree lighting ceremony on the South Lawn of the White House. Pictured: Secretary of the Interior Oscar Chapman (seated, right). All others unidentified.

A group of people walking to the South Lawn of the White House for the National Christmas Tree lighting ceremony. Pictured, center group: Secretary of the Interior Oscar Chapman (second from left); Mrs. Ann Chapman (right); and James Chapman (holding Mrs. Chapman's hand). All others unidentified.

Attendees of the National Christmas Tree lighting ceremony on the South Lawn of the White House. Pictured: Secretary of the Interior Oscar Chapman (standing, right); Ann (Mrs. Oscar) Chapman (seated, left); and James Chapman (seated, second from left). All others unidentified.

An unidentified young man speaks during the National Christmas Tree lighting ceremony on the South Lawn of the White House. Pictured: Secretary of the Interior Oscar Chapman (seated, right). All others unidentified.