RCW 27.12.380 Annexation of city or town into library district — Withdrawal of annexed city or town.The legislative body of such a city or town which has annexed to such a library district, may, by resolution, present to the voters of such city or town a proposition to withdraw from said library district at any general election held at least three years following the annexation to the library district.
http://apps.leg.wa.gov/rcw/default.aspx?cite=27.12.380
