8684 - Establishing Culebra Island Naval Defensive Sea Area and Culebra
          Island Naval Airspace Reservation; Puerto Rico
          Signed: February 14, 1941
          Federal Register page and date: 6 FR 1016, February 18, 1941
          Amended by: EO 11673, June 6, 1972
          Revoked by: EO 11886, October 17, 1975