Three commemorative covers with color cachets honoring the Apollo 13 mission, all postmarked on April 17, 1970, the date of mission ‘splashdown,’ individually signed in ballpoint or felt tip by a noted NASA director: “Christpher C. Kraft, Jr.,” “Gerry Griffin, Flight Director,” and “Rocco A. Petrone, Apollo Program Director.” Two covers are stamped “Mission Aborted, Splashdown.” In overall very fine condition.
