RCW 35.13.185
Annexation of federal areas by first-class city.
Any unincorporated area contiguous to a first-class city may be annexed thereto by an ordinance accepting a gift, grant, lease or cession of jurisdiction from the government of the United States of the right to occupy or control it.
[ 1965 c 7 § 35.13.185. Prior: 1957 c 239 § 7.]