Md. Code, General Provisions § 6–302

Jurisdiction ceded to the United States reverts to the State if the United States ceases to hold land acquired under:

(1) Chapter 394 of the Acts of the General Assembly of 1910;

(2) Chapter 59, §§ 36A and 36B, of the Acts of the General Assembly of 1950; or

(3) Chapter 158 of the Acts of the General Assembly of 1953.