Again, personal attacks to stifle the discussion because your view is questioned.  But I will check out the black population in CA and WA from 1845 until 1940 and compare it to OR's.  Of course this will require more than just cursory numbers (whatever they may be).  My initial assumption will be that if large black populations are found in this time period it will be in the cities and probably due to a war boom but I could be wrong and that is the fun of research.  Since Oregon only has one city that would could even possibly compare to the defense heavy areas of CA and WA that will also be problematic but it should be interesting.