Những chiếc phong thư vũ trụ (Phần 1)

5 May 1961 - PC - Mercury MR-3 launch cover, signed by Alan Shepard

2 Aug 1971 - Houston - Mercury MR-3 10th Aniv, NASA local post

6 Apr 1991 - IL - Mercury MR-3 30th Aniv, signed by Alan Shepard

2 Aug 1971 - KSC - Mercury MR-3 10th Aniv, printed signature

8 Apr 1964 - CC - First Gemini to Orbit (Gemini 1)

26 Feb 1966 - USS Boxer - Apollo-Saturn 201 (Apollo 1)

5 Jul 1966 - CC - Apollo-Saturn 203 (Apollo 2)

25 Aug 1966 - CC - Apollo-Saturn 202 (Apollo 3)

25 Aug 1966 - USS James Owens - Apollo-Saturn 202 (Apollo 3)

9 Nov 1966 - CC - Apollo-Saturn 501 (Apollo 4)

9 Nov 1966 - KSC - Apollo-Saturn 501 (Apollo 4)

27 Jan 1967 - PW - Apollo-Saturn 204 (Apollo fire)

22 Jan 1968 - CC - Apollo 5 Launch

22 Jan 1968 - Vandenberg AFB - Apollo 5 Tracking Station

22 Jan 1968 - White Sands MR - Apollo 5 Tracking Station

4 Apr 1968 - CC - Apollo 6 Launch

4 Apr 1968 - CC - Apollo 6 Launch

25 May 1973 - Bronx - Interesting item, sent to Joe Kerwin in 1971, prior to the selection of the 3 crews, signed by Joseph Kerwin

18 Jan 1972 - Houston - Skylab prime crews chosen

26 Jul 1972 - Houston - Skylab Medical Experiments Altitude Test (SMEAT) cover, signed by the 3 astronauts that took part in the tests: Robert Crippen, William Thornton and Karol Bobko

22 Sep 1972 - Dover - Another interesting cover from the ex-Max Kronstein collection. Skylab Space Suit Test cover, with space suit material attached and signed by astronaut Joseph Kerwin

16 Apr 1973 - KSC - Skylab 1 Rollout cover

14 May 1973 - CC - Skylab 1 launch cover

14 May 1973 / 11 Jul 1979 - Double CC cancel - Skylab fell to Earth

14 May 1974 - Houston - Skylab FDC, signed by Christopher Kraft

12 Jul 1979 - Adelaide, Australia - Skylab fell on Australia