16 U.S. Code § 410z - Establishment
In the event that the properties described in this section are not donated to the United States or purchased with donated funds, they may be acquired by the Secretary with appropriated funds:
At such time as the Secretary determines that sufficient lands, improvements, and interests therein have been acquired or that cooperative agreements satisfying the preservation and historical objective of this subchapter have been executed, he may establish the Boston National Historical Park by publication of notice to that effect in the Federal Register, together with a detailed description or map setting forth the properties included therein.
As used in this section, the Charlestown Navy Yard shall include the United States Ship Constitution and the lands generally depicted on the map entitled “Boundary Map: Charlestown Naval Shipyard—U.S.S. Constitution, Boston National Historical Park”, numbered BONA 20,000 and dated March 1974 which shall be on file and available in the offices of the Director of the National Park Service, Department of the Interior, Washington, D.C. As used in this section, the Charlestown Navy Yard shall also include the properties known as the Ropewalk and Tar House and the Chain Forge and Round House, designated on such map as buildings numbered 58, 60, and 105. All right, title, and interest in the Federal properties and improvements included therein shall be transferred to the Secretary of the Interior:
1980—Subsec. (d). Pub. L. 96–344 inserted provision including within the Charlestown Navy Yard properties known as the Ropewalk and Tar House and the Chain Forge and Round House, designated as buildings numbered 58, 60, and 105.
1978—Subsec. (a)(8). Pub. L. 95–625, § 310(a), added par. (8).
Subsec. (d). Pub. L. 95–625, § 310(d), authorized grant of easements and rights-of-way for vehicular, pedestrian and utility access to the Boston Navy Yard outside the boundaries of the Boston National Historical Park upon express condition that the grantee convey to the United States the part of the Boston Navy Yard owned by the Boston Redevelopment Authority.