Question: When was the gettysburg national military park established?
Disambiguated questions and answers: question: When was the gettysburg national military park established with initial protection?
When was the gettysburg national military park established with GBMA protection?
When was the gettysburg national military park established with federal protection?
When was the gettysburg national military park established with a national park designation?
When was the gettysburg national military park added to NRHP?
answer: 1863
1864
1893
1895
October 15, 1966
Natural Questions answer: 1895 (from the Wikipedia article "Gettysburg National Military Park")