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1. SI History Chronology

   Secretary Wetmore Retires

   • Date: December 31, 1952

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3. SI History Chronology

   Secretary Carmichael Retires

   • Date: January 31, 1964

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5. SI History Chronology

   Secretary Walcott Dies

   • Date: February 9, 1927

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7. SI History Chronology

   G. Wayne Clough Named 12th Secretary of Smithsonian

   • Date: March 14, 2008

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9. SI History Chronology

   Samuel Langley Appointed Acting Secretary

   • Date: February 10, 1887

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11. SI History Chronology

    Charles G. Abbot Retires as Secretary

    • Date: June 29, 1944

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13. SI History Chronology

    Leonard Carmichael Becomes Seventh Smithsonian Secretary

    • Date: January 2, 1953

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15. SI History Chronology

    Robert McC. Adams Appointed Secretary

    • Date: January 21, 1984

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17. SI History Chronology

    Charles D. Walcott Elected Secretary

    • Date: January 23, 1907

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19. SI History Chronology

    Charles G. Abbot Elected Secretary

    • Date: January 10, 1928

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21. 

    Spencer Baird Elected Secretary

    • Date: May 17, 1878

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23. SI History Chronology

    S. Dillon Ripley Becomes Secretary

    • Date: February 1, 1964

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