Typed letter and accompanying statement to Secretary-General U Thant, United Nations from James E. McDonald, Professor in the Institute of Atmospheric Physics, The University of Arizona, dated 5 June 1967. The title of the statement is: "Statement of International Scientific Aspects of the Problem of the Unidentified Flying Objects Submitted on June 7, 1967 to the Outer Space Affairs Group, United Nations Organization, by James E. McDonald, Professor University of Arizona. Professor McDonald visited Australia and New Zealand in 1967.

James E. McDonald Papers, Special Collections at the University of Arizona Libraries. A summary of the Papers is available online.