LFS2,  great idea about the guided walking tour,  you've interested me in walking the solar system.
I've been involved with a few historic tours of downtown  myself and wish we had more of this.  An  interesting local  fact is that the homesite of the last black person to own property in Eugene , Wiley  Griffon, was right down the hill almost visible from  the Mims' houses.    It was on the corner of 4th and Mill, (EWEB parking)  along the old Millrace.  From the time he died  in 1913, not another African-American was known to  own property in Eugene until the Mims around 1949.

" What evidence does Nokes present that ....' the tragic legacy of the laws was that they discouraged blacks from coming at all.”   For that, Old Friend,, you'll have to dig out of Nokes (and McClagan) yourself.   It's worth it to know the real history of this state we love but which  has had its dark side.  You'll see why the  Mims' speakers, historic marker, and info boards all mentioned the exclusion laws.