| USA 1967 (26 Jun) Space Cover SCIENTIFIC BALLOONING Palestine Texas
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| USA 1967 (26 Jun) Space Cover"COMMEMORATIVE/ SCIENTIFIC/ IMAGE OF BALLOON/ BALLOONING/FLIGHT COVER/ NCAR FLIGHT STATION/ PALESTINE - TEXAS" and typed manu"GAMMA RAY STUDY FOR/DR. JAMES OVERBECK OF/ M.I.T." unaddressed and affixed with 5c Mary Cassatt stamp cancelled "PALESTINE, TX/JUN 26/PM/1967/75801"
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Item #: INV-128456
Condition Co
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