Just put up for sale my very first ref pack of Seattle and the Pacific Northwest. Find it here: https://www.artstation.com/a/3675130
When I lived there back in 2016-2017, it was a super inspiring place to be in with some beautiful PNW nature nearby (especially when you were working on foliage at the time heh!). Thought I'd share some of my personal ref photos from that time with the hopes to creating the same inspiration if you're tackling a PNW-inspired project!
Any questions, just holler :).