A crop circle made front page in 1999 . The Walla Walla Union Bulletin reported it.
This was generally close to areas of Bigfoot sightings(a few miles from a concentration of Mill Creek,Washington sightings) in the Blue Mountains.
I could not find the article in searching for it. Micro-fitch photos at the college are also very poor. I did find this link with the crop circle though:
Note: There were Bigfoot sighting before and after this crop circle,reliably close in date.