In Portland, go to pro photo supply. They have a good stash of B/W chemistry and a good selection of film. Citizens photo is another favorite of mine, but the selection is somewhat less.
If you are driving by I-90, I-5 via Seattle, then a stop in Glazers is a must. It's considered a toll on a road for analog photographers in the PNW. I have to warn you, the toll amount might get big. It always does for me.
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