RCW 58.28.370: Notice of filing patent.

Said judge must promptly give public notice by advertising for four weeks in any newspaper published in such town, or if there be no newspaper published in such town, then by publication in some newspaper having general circulation in such town, and not less than five written or printed notices must be posted in public places within the limits of such townsite; such notice must state that the patent for said townsite (or a certified copy thereof) has been filed in the county auditor's office.