Collection of 19 commemorative covers signed by German rocket experts, several of whom were members of Wernher von Braun's pioneering V-2 rocket team who came stateside via Operation Paperclip, most with stamped cachets honoring various NASA achievements. Signers are: Arthur Rudolph, Adolf Thiel, Walter Haeussermann, Karl Heimberg, Fritz Mueller, Ernst Stuhlinger, Walter Jacobi, Georg von Tiesenhausen, Heinz Grosser, Eberhard Rees, Herbert Bergeler, Konrad Dannenberg, Dieter Grau, Friedrich Duerr, Albert Schuler, William Schulze, Max E. Nowak, Bernhard Tessmann, and Guenter Wendt. In overall fine condition.
