Memorabilia documenting the development of atomic energy research and high energy physics in the United States, Europe, and Asia. Includes manuscripts, correspondence (including many requests to give talks or seminars or advice on building accelerators), papers, talks, articles, clippings, notes and notebooks, course materials, memorabilia, professional papers; drawings, designs and photographs of some of the buildings, accelerators and equipment he helped design, as well as some of his sculptures. Among the personal papers in the collection are some family letters, documents, and photographs, as well as designs and plans for his homes in New Mexico and Florida.