Statement of information submitted on behalf of President Nixon. Book IV, White House surveillance activities : hearings before the Committee on the Judiciary, House of Representatives, Ninety-third Congress, second session pursuant to H. Res. 803, a resolution authorizing and directing the Committee on the Judiciary to investigate whether sufficient grounds exist for the House of Representatives to exercise its constitutional power to impeach Richard M. Nixon, President of the United States of America, May-June 1974