Here are some key points about Dr. Kronstein.

1. Rocket Mail Authority:
   • Dr. Kronstein established himself as an early authority on Rocket Mail. He delved into this fascinating intersection of mail delivery and technology, even publishing two important histories:
     • “Pioneer Airpost Flights of the World 1830-1935”
     • “Rocket Mail Post Flights of the World to 1986”
2. Research and Publications:
   • His expertise extended beyond Rocket Mail. Dr. Kronstein conducted in-depth research in the field of aerophilately.
   • He authored articles for the Air Post Journal, a publication by the American Air Mail Society.
   • His written works included the aforementioned books, notably “Pioneer Airpost Flights of the World 1830–1935” and “Rocket Mail Flights of the World to 1986”.
3. Catalog Efforts:
   • Dr. Kronstein focused on cataloging early European flight covers and Zeppelin covers for the American Air Mail Catalogue.
   • His meticulous efforts contributed to the preservation and understanding of historical airmail artifacts.
4. Honors and Awards:
   • The American Air Mail Society recognized his outstanding contributions by inducting him into its Hall of Fame.
   • Dr. Kronstein received prestigious awards, including the Walter J. Conrath Memorial Award, the George W. Angers Memorial Award, and the first Gatchell Literature Award.
5. Moon Mail and Friedrich Schmiedl:
   • Dr. Kronstein gained widespread attention for sending postmarked Air Mail covers addressed to astronauts on the moon.
   • His close association with Friedrich Schmiedl, the father of Rocket Mail, further solidified his legacy in this unique field.

I’m interested in the space-related covers that Dr. Kronstein made, and in particular those with hand-made labels affixed to commemorate US space events, such as those shown below.

Discoverer 13 Recovery – 11th Aug 1960:

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Saturn SA-1 Launch – 27th Oct 1961:

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Saturn SA-2 Launch – 25th Apr 1962:

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Project Mercury / Scott Carpenter / MA-7 ‘Aurora 7’ – 24th May 1962:

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X-15 Flight # 65 (Joe Walker) – 2nd Aug 1962:

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Mariner 2 Launch – 27th Aug 1962:

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Project Mercury / Gordon Cooper / MA-9 Launch – 15th May 1963:

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Titan Rocket Launch – 15th Jan 1964:

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Relay 2 Launch – 21st Jan 1964:

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Ranger 6 Impacts Moon – 2nd Feb 1964:

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X-15 Flight # 111 (Joe Engle) – 9th Jul 1964:

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Ranger 7 Launch – 28th Jul 1964:

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X-15 Flight # 116 (Milt Thompson) – 4th Sep 1964:

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Saturn SA-7 Launch – 18th Sep 1964:

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Mariner 4 Launch – 28th Nov 1964:

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Gemini 3 Mission – 23rd Mar 1965:

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Gemini 4 Mission – 3rd Jun 1965 to 7th Jun 1965:

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Gemini 5 Mission – 21st Aug 1965 to 29th Aug 1965:

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X-15 Flight # 145 (Robert Rushworth) – 26th Aug 1965:

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Nike Cajun / Ikeya-Seki Comet – 28th Oct 1965:

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Gemini 7 Mission – 4th Dec 1965 to 18th Dec 1965:

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Gemini 6 Mission – 15th Dec 1965 to 16th Dec 1965:

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Gemini 8 Mission – 16th to 17th Mar 1966:

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Gemini 9 Mission – 3rd Jun 1966 to 6th Jun 1966:

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Gemini 10 Mission – 18th Jul 1966 to 21st Jul 1966:

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Apollo AS-202 Suborbital Test – 25th Aug 1966:

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Gemini 11 Mission – 12th Sep 1966 to 15th Sep 1966:

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Gemini 12 Mission – 11th Nov to 15th Nov 1966:

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Apollo 4 Launch – 9th Nov 1967:

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Apollo 5 Launch – 22nd Jan 1968:

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X-15 Flight # 192 (Bill Dana) – 1st Mar 1968:

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Apollo 6 Launch – 4th Apr 1968:

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NCAR Balloon Launch Palestine TX – 5th Jun 1971:

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NCAR Balloon Launch Palestine TX – 15th Jun 1971:

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Apollo 15 Launch – 26th Jul 1971:

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Skylab 1 Launch – 14th May 1973:

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