Obtaining historical King County Superior Court records prior to 1984 can be confusing.  Many agency and court records are stored in the King County Archives.  However, the majority of the King County Superior Court records for 1853-1983 are stored with the Puget Sound Regional Archives (PSRA) located in Bellevue.  They have the Superior Court civil case files for 1853-1983.  Other types of Superior Court files are also stored there but for differing time periods.  For instance, criminal case files for 1889-1972 are included, but the criminal index only covers 1890-1977.

 

Other types of King County Superior Court files found at PSRA are probate cases; index of juvenile files; mental illness case files; Mother’s Pension case files; naturalization case files; and general indexes, by defendant and by plaintiff.

 

The website for the King County Archives does a particularly good job of describing the documents they archive.