"Our Changing Land" Opens, NMNH

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The National Museum of Natural History's Bicentennial exhibition, "Our Changing Land" opens. It is the permanent ecology exhibit hall.


  • Bicentennial of the American Revolution
  • National Museum of Natural History (U.S.)
  • Our Changing Land (Exhibition) (1977: Washington, D.C.)


Chronology of Smithsonian History


  • The Torch contradicts itself and gives the date of opening as November 19 on page one and November 20 on page two.
  • Torch, 12/1975, p. 1

Contact information

Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu


November 20, 1975


  • Exhibit openings
  • Exhibitions
  • Ecology

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