Memoranda and notes, memoranda of conferences with the President, reports, working papers, memoranda of conferences of the committee of Principals, studies, and correspondence. Topics: Views of the President's science advisers, James R. Killian and George B. Kistiakowsky, and members of the President's Advisory Committee; high energy physics; international atomic energy matters; potential hazards of nuclear reactors; Soviet atomic energy programs; the Joint Congressional Committee and Atomic Energy; nuclear testing; Eratom; saline water conversion; Stanford accelerator; US-USSR space vehicle capabilities.