Results for "Twitter"

1. Collection

   General Correspondence, 1962-1972

   • Date: 1962 1962-1972
   • Creator: Smithsonian Astrophysical Observatory Assistant Director (Science)

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3. Collection

   Moonwatch General Correspondence, 1957-1975

   • Date: 1957 1957-1975
   • Creator: Smithsonian Astrophysical Observatory Moonwatch Division

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5. Collection

   Videohistory Records, 1985-1992

   • Date: 1985 1985-1992
   • Creator: National Air and Space Museum (U.S.) Division of Space History

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7. 

   Dirk Brouwer (1902-1966)

   • Creator: Alburtus-Yale News Bureau

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9. SI History Chronology

   First Lectures Under Smithsonian Auspices

   • Date: February 18, 1848

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11. SI History Chronology

    Astrophysical Observatory Established

    • Date: March 1, 1890

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13. 

    George Ellery Hale (1868-1938)

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15. 

    James Hartness (1861-1934)

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17. 

    James Hartness (1861-1934)

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19. 

    Willem de Sitter (1872-1934)

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21. 

    Edwin Brant Frost (1866-1935)

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23. 

    Willem de Sitter (1872-1934)

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