Results for "Conservation and restoration"

 
Showing results 1 - 3 of 3 for Conservation and restoration
  1. SI History Chronology

    Roof of North Tower Replaced

    • Date: 1970

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  3. SI History Chronology

    Authorization for Fireproofing SI Building

    • Date: March 3, 1879

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  5. SI History Chronology

    S. Dillon Ripley, Secretary, 1964-1984, Dies

    • Date: March 12, 2001 19th century

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Showing results 1 - 3 of 3 for Conservation and restoration