Question: When was the gettysburg national military park established?

Disambiguated questions and answers:
context: No context provided
question: When was the gettysburg national military park established with initial protection?
short_answers: 1863
context: No context provided
question: When was the gettysburg national military park established with GBMA protection?
short_answers: 1864
context: The 1864 Gettysburg Battlefield Memorial Association and later veteran's associations acquired land for memorials and preservation (e.g., the 72nd Pennsylvania Infantry Monument tract with the statuary memorial depicted on the 2011 America the Beautiful Quarter dollar). Federal acquisition of land that would become the 1895 national park began on June 7, 1893, with 9 monument tracts of each and a larger 10th lot of from the Association, as well as from Samuel M Bushman. In addition to land purchases, federal eminent domain takings include the Gettysburg Electric Railway right-of-ways in 1917 (cf. 1896 United States v. Gettysburg Electric Ry. Co.). Donated land included 160 acres from the 1959 Gettysburg Battlefield Preservation Association and from the W. Alton Jones Foundation. The Gettysburg Foundation is a 501(c)(3) non-profit philanthropic, educational organization that operates in partnership with the National Park Service to preserve Gettysburg National Military Park and the Eisenhower National Historic Site, and to educate the public about their significance. (e.g., the Foundation raised funds for and built the new Museum and Visitor Center, opened in 2008, and secured funds for the creation of a new cannon shop that daily preserves the nearly 400 cannons representing actual artillery lines on the battlefield. In addition, the Gettysburg Foundation has provided approximately $20 million in direct support of the National Park Service just since 2009. The Visitor Center houses the Gettysburg Museum of the American Civil War and the 19th century, painting in the round, the Gettysburg Cyclorama)
question: When was the gettysburg national military park established with federal protection?
short_answers: 1893
wikipage: Gettysburg National Military Park
context: No context provided
question: When was the gettysburg national military park established with a national park designation?
short_answers: 1895
context: The park was added to the National Register of Historic Places on October 15, 1966.
question: When was the gettysburg national military park added to NRHP?
short_answers: October 15, 1966
wikipage: Gettysburg National Military Park

Long-form answers:
knowledge: content: The Gettysburg National Military Park protects and interprets the landscape of the 1863 Battle of Gettysburg during the American Civil War. Located in Gettysburg, Pennsylvania, the park is managed by the National Park Service.
wikipage: Gettysburg National Military Park
long_answer: The Gettysburg National Military Park, located in Gettysburg, Pennsylvania, protects and interprets the landscape of the Battle of Gettysburg during the American Civil War. It was first established with initial protection in 1863, with the Gettysburg Battlefield Memorial Association and later veteran's associations acquiring the land for memorials and preservation in 1864. Federal protection began with the acquisition of land that would be later designed as national park in 1895 on June 7, 1893, with 9 monument tracts of each and a larger 10th lot of from the Association, as well as from Samuel M. Bushman. The park was added to the National Register of Historic Places on October 15, 1966.