That's really cool. I might have to visit the nursery on Sauvie island sometime. I wasn't aware of too many other people (or any at the time actually) trying to grow hardy citrus in the Pac NW when I started trying it myself back in '94. It's good to find out there were others around that time period too. There was a nursery I bought my first Morton Citrange from back in 1994 located in Molalla, OR. which was called "Northwoods Nursery" which I think One Green World is on offshoot of. There were mail order nurseries including one in Oregon called "Oregon Exotics" (no longer around) that had some cold hardy citrus offerings (but some felt they exaggerated the hardiness and/or edibility of the varieties they sold back then). Also, before the big onset of the internet, I did all of my cold hardy citrus research from Libraries. That's where I first found out about Citranges and PT (1993). After I started dabbling with the internet, I started the "Hardy Palm & Subtropical Board" (1997) and was able to correspond with others easier (much better than snail mail) and could collaborate on the subject better, as we do here. So it was great to find the recent Oregonian article and also find that there were some others who have been at this for a long time as well (Pac NW growers).
My interest actually started after moving up from Southern California in the '90s and having some banter with my ex father-in-law about the advantages of living up here. We were bantering again one time and he said to me "How many orange trees do you have growing in your yard?" and I thought, I wonder if there are any cold hardy orange trees? I started doing research and the rest is history as I caught the cold hardy citrus bug.
Anyway, I might give that nursery on Sauvie a visit. Sounds interesting. Thanks for the info.