Short list of airfields around Portland I have yet to land at

I got out the Seattle sectional this evening and made a quick list of airports in the Portland area (on the Oregon side of the river) that I have not yet ever landed at - which means I need to go there. Turns out the list is pretty darned short:

• Skyport
• Sandy River
• Vernonia

I've driven to each of those, but never flown. All the other airports in the area - at least the ones open to the public - I've flown to at some point (as well as many of the private airfields).

On the Washington side of the Columbia River the list is slightly longer, but not much. I'll tackle those another time.