| USA 1967 (4 Jun) Space Cover NCAR BALLOON BASE Palestine Texas
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| USA 1967 (4 Jun) Space Cover "BALLOON LAUNCHED/FROM/IMAGE BALLOON/NCAR BALLOON BASE/ PALESTINE TEXAS" and typed manu"CRAB NEBULU RADIATION/ DETECTION FLIGHT FOR DR./ R. HAYNES OF RICE UNIV." and affixed with 5c Mary Cassatt stamp cancelled "PALESTINE, TX/JUN 4/PM/1967/75801"
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Item #: INV-128435
Condition Co
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