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Centennial Collections Transferred to SI
- Date: November 13, 1876
Spencer Baird Elected Secretary
- Date: May 17, 1878
Joseph Henry's Program of Organization for the Smithsonian Adopted
- Date: December 13, 1847
Alexander Wetmore Elected Secretary
- Date: January 12, 1945
Joseph Henry Elected First Smithsonian Secretary
- Date: December 3, 1846
Joseph Henry Dies
- Date: May 13, 1878
