Some other mushrooms that I've been able to find locally here in the Bellevue area:

Barrow's boletes (similar to King Bolete, but considered by many to be better tasting): around oak trees in Bellevue during June-Sept

Shaggy mane (coprinus comatus): often near driveways or landscaping areas, during late summer to fall. A friend showed me a pic of the grass lawns at Point Defiance Zoo that were covered with them this past fall

Oyster mushrooms (specifically Pleurotus populinus): late spring to early summer in some of the local nature parks. Look for them growing on dead alder(?) or dead non-conifer trees.