 The Town of Seattle was disincorporated on January 18, 1867, and remained a mere precinct of King County until late 1869, when a new petition was filed and the city was re-incorporated December 2, 1869, with a mayor–council government.The corporate seal of the City of Seattle carries the date "1869" and a likeness of Chief Si'ahl in left profile.Seattle has a history of boom-and-bust cycles, like many other cities near areas of extensive natural and mineral resources.