O'Mahoney, Joseph Christopher, 1884-1962

Oscar Chapman (standing) gives a speech after being sworn in as Secretary of the Interior. Pictured, seated, left to right: Assistant Secretary of the Interior William Warne; Senator Joseph C. O'Mahoney; Julius Krug, former Secretary of the Interior; Chief Justice Fred Vinson; Mrs. Ann Chapman; and Assistant Secretary of the Interior C. Girard Davidson.

From left to right: Senator Lester C. Hunt, Secretary of the Interior Oscar Chapman, Senator Joseph C. O'Mahoney, and Bureau of Reclamation Commissioner Michael Straus discuss the Riverton Project at the Department of the Interior. From: Oscar Chapman Scrapbook

From left to right: Secretary of the Interior Oscar Chapman; President Harry S. Truman; Congressman John R. Murdock; Senator Joseph O'Mahoney; and Senator Zales Ecton attend a luncheon in the dining room of the Department of the Interior for members of the Committee on Interior and Insular Affairs, the House Public Lands Committee, and the Senate Committee on Public Works. From: Oscar Chapman Scrapbook

President Harry S. Truman (back of table, fourth from right) and members of the Committee on Interior and Insular Affairs, the House Public Lands Committee, and the Senate Committee on Public Works attend a luncheon in the dining room of the Department of the Interior. Also pictured: Secretary of the Interior Oscar Chapman (back of table, fifth from right); Senator Joseph O'Mahoney (back of table, third from right); Senator Zales Ecton (back of table, second from right); Congressman John R. Murdock (back of table, standing); and Appointment Secretary Matthew Connelly (back of table, left).

Left to right: Conrad Wirth, Director, National Park Service; Michael Straus, Bureau of Reclamation Commissioner; Senator Joseph C. O'Mahoney; and an unidentified man in the Secretary of the Interior's office.

Left to right: Ann (Mrs. Oscar) Chapman, Senator Joseph C. O'Mahoney, and Secretary of the Interior Oscar Chapman in Chapman's office.

President Harry S. Truman, his staff, and members of the Interior Insular and Public Lands Committees at a luncheon in Truman's honor at the Department of the Interior. Back side, left to right: Matthew J. Connelly, Appointments Secretary to President Truman; Senator Arthur V. Watkins; Senator Carl Hayden; Secretary of the Interior Oscar Chapman; President Truman; Senator Joseph C. O'Mahoney; Congressman John R. Murdock (standing); Senator Zales Ecton; and unidentified. All others unidentified.

Left to right: Secretary of the Interior Oscar Chapman; President Harry S. Truman; Congressman John R. Murdock; and Senator Joseph C. O'Mahoney at a luncheon in the President's honor at the Department of the Interior. The President, members of his staff, and members of the Interior's Insular and Public Lands Committees attended the luncheon.

Left to Right: Secretary of the Interior Oscar Chapman; President Harry S. Truman; Congressman John R. Murdock; Senator Joseph C. O'Mahoney; and Senator Zales Ecton at a luncheon at the Department of the Interior in honor of President Truman. The President, his staff, and members of the Interior Insular and Public Lands Committees attended the luncheon.

Secretary of the Interior Oscar Chapman (at podium) speaks during the swearing-in ceremony for Assistant Secretary of the Interior Dale Doty. On platform, left to right: Floyd Dotson, Chief Clerk, Department of the Interior; Assistant Secretary of the Interior C. Girard Davidson; Doty; Chapman; unidentified; Senator Joseph C. O'Mahoney; Administrative Assistant Secretary of the Interior Vernon Northrop; and Assistant Secretary of the Interior William Warne. All others unidentified.