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  1. SI History Chronology

    Use of SI Lecture Room for Public Meetings

    • Date: 1857

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  3. SI History Chronology

    Smithsonian Lecture Program Ends

    • Date: January 28, 1865

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  5. SI History Chronology

    Lecture Hall in A&I

    • Date: 1901

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  7. SI History Chronology

    Completion of Wings of Smithsonian Building

    • Date: January 2, 1850

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Showing results 1 - 4 of 4 for Twitter