16 U.S.C. § 409d

Employees of the said Washington Association, who were, prior to March 2, 1933, charged with the care and development of the said Ford House and its museum and other effects, may, in the discretion of the Secretary of the Interior, hereafter be employed by the National Park Service in the administration, protection, and development of the said park without regard to the laws of the United States applicable to the employment and compensation of officers and employees of the United States.