Oct 28, 1972 - Houston
Preliminary System Review (stage I)note, the ASTP emblem was introduced only on March 1974 thus this cachet in not 100% "clean"
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ASTP Pre-launch covers
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Jan 12, 1975 - Houston
Soyuz-17 docking Salyut tracking by NASA. Although this cover shows the event as part of ASTP preparation, Soyuz-17 has never been tasked to perform any ASTP activity (at least officially).Show More
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