Just a reminder, in case you haven't found it yet: the LDS Church has posted a newly-revised electronic index to
Washington death certificates 1907 - 1960. It is part of the pilot program associated with the redesigned FamilySearch web site. No more murky microfilm! No more Soundexing! Best of all, it's free!
To go there:
http://pilot.familysearch.org/recordsearch/start.html#w=;p=2...This link leads you directly to the
Washington query page. To search the entire pilot project, click on "new search."
This is a really neat index. It is forwardly-searchable by maiden names of women, has fuzzy matching, has exact matching, and is location-sensitive. Have fun, everybody.