Three items: a postal cover, 8.5 x 4.25, with affixed Merchiston Castle School cachet honoring John Napier, signed in black ink, "Glenn T. Seaborg"; a glossy 8.5 x 11 half-length photo of Seaborg seated at his desk in later age, signed in black felt tip, "Glenn T. Seaborg"; and an eight-page copy of "A Report to the Secretary of War, June 1945," 8.5 x 11, signed on the first page in black ink, "Glenn T. Seaborg." In overall fine condition, with some light dampstaining to the right edge of the envelope.