$3.5

BOEING KC-97 FLYING BOOM TANKERS JAN 17,1998 KENT WA SPACE COVER

$4.75

PROGRESS 5 COUPLING SALUTE 6 SOYUZ 32 RUSSIAN SPACE COVER

$1.45

GENERAL ZACAHRY TAYLOR FIRST U.S. PRESENCE IN TEXAS CORPUS CHRISTIE TEXPEX COVER

$1.97

Stampman Space Event Cacheted Cover Clearance Sealed Flap (SP60

$2.5

HEAO-1 HIGH ENERGY ASTRONOMY OBSERVATORY LAUNCH 8/12/1977, CAPE CANAVERAL CANCEL

$5

2023 SpaceX CRS-26 Dragon ISS Splashdown & Recovery Houston 11 January

$2.75

WOMEN IN AVIATION & SPACE SYMPOSIUM MAR 12,1980 HOU SPACE VOYAGE COVER NASA

$4

INTELSAT 4 NIXON CHINA VISIT JAN 23,1972 CAPE ORBIT SPACE COVER NASA

$3

1979 19th Anniversary of Apollo II Moon Landing, ccc

$4

HEAO-2 LAUNCH BY ATLAS NOV 13,1978 KSC SPACE COVER NASA

$4

APOLLO 15 SPLASHDOWN AUG 7,1971 HOU NASA LOCAL POST SPACE COVER NASA

$4

NIKE TOMAHAWK LAUNCH FEB 6,1973 CHATANIKA ALASKA JACKASS FLATS SPACE COVER NASA