Appealing collection of 25 FDCs and commemorative covers bearing space-related cachets or stamps, each signed by in ink or felt tip by a pioneering rocket scientist, including many from Operation Paperclip: Wernher von Braun, Walter Dornberger, Kurt H. Debus (with Mike Ross), Helmut Holzer, Arthur Rudolph, Walter Haeussermann, Erich K. Ball, Ernst Geissler, Hans Gruene, Eberhard Rees, Karl Heimburg, Rudi Beichel, Georg von Tiesenhausen, Otto A. Hoberg, William A. Mrazek, Dieter K. Huzel, Ernst Stuhlinger, Werner K. Gengelbach, J. W. Muehlner, Werner Kuers, Werner K. Rosinski, Gustav Kroll, Theodor K. Vowe, Helmut G. L. Krause, and Albin E. Wittmann. In overall fine condition. From the collection of aerospace memorabilia specialist Ken Havekotte.
