Two items: an FDC with a cachet of the ‘Unmanned Mariner’ probe, postmarked on April 4, 1975, signed in blue and black ink by Kurt H. Debus, Konrad Dannenberg, and Hermann Oberth, which is accompanied by a first edition of the 1979 book The Rocket Team; and a first edition of Peenemunde to Canaveral, hardcover with dust jacket, published by Prentice-Hall in 1962, signed and inscribed on the first free end page in blue ballpoint by the book’s author, Dieter Huzel. In overall very good to fine condition, with light wear and edge chipping to both dust jackets.