Please be VERY careful in discussing digging in either Washington, or Oregon. Especially in any public forum. Both states are not only unfriendly overall towards bottle digging, but have strict laws which absolutely prohibit any digging, even on private property. You have to be living under a rock not to know this. As recently as last week in my town, there was a front page story in our newspaper regarding an upcoming construction on private property, and the Oregon law requiring a "permit" and on site Arc... The focus is on the privies, and their historical artifacts. The propertyowners are now held hostage to this "law".
I can tell you all from experience that so much as discussing the possibility of bottle digging in either state is beyond dangerous. Do not underestimate the seriousness of this.
It's so sad that Oregon has gone to the "dark side" regarding artifacts and bottle digging on private property. Archys generally learned EVERYTHING that they now know from studying books written by collectors. It's been a couple of generations since the early bottle books were printed and they consider the knowledge to theirs only by this date. I love to watch the amateurs at work, scurrying about like little hens when a shard shows up. Complete and mint bottles mean no more to them than the tiniest of pieces. I know from experience that the real good bottles fall into the supervising archaeologist's hands and wind up off site in his or her personal stash.[]