Terracrux games is the shop closest to Seattle that carries flames of war. They may carry Team Yankee? Wizard’s Keep in Renton technically carries both games but they only have a couple starter sets. Here’s an invite to the Terracrux discord:
https://discord.gg/5HFERBAx
Wizards Keep does Historical Gaming the last Friday of the month, usually in 15mm. I’m not sure what ruleset they use or what period.
here’s an invite to their discord https://discord.gg/Ex4sAvMX
i live in the Bellevue area near Mox Boarding House, which is a giant board game/Magic/restaurant/minis shop. I’m just learning to play FoW and would love to get some games in. I have mid and late war Germans.
Besides that there is the northwest historical mini game association, which has a Facebook group. You may already know about them though.