16 U.S. Code § 409b - George Washington headquarters; maintenance
After the acquisition of the museum and other personal effects of the said Washington Association by the United States, including such other manuscripts, books, paintings, and other relics of historical value pertaining to George Washington and the Revolutionary War as may be donated to the United States, such museum and library shall forever be maintained as a part of said Morristown National Historical Park.
Source(Mar. 2, 1933, ch. 182, § 3,47 Stat. 1422.)