| USA 1967 (7 Apr) Space Cover NCAR BALLOON BASE Palestine Texas
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| USA 1967 (7 Apr) Space Cover "BALLOON LAUNCHED/FROM/IMAGE BALLOON/NCAR BALLOON BASE/ PALESTINE TEXAS" and typed manu"LAUNCHING FOR DR. ROCHUS VOGT/ OF CALIF. INST. OF TECHNOLOGY/ FOR RADIATION STUDIES." and affixed with 5c National Park Service cancelled "PALESTINE, TX/APR 7/PM/1967/75801"
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Item #: INV-128380
Condition Co
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