I subscribe to Fine Woodworking's weekly e-news letter and in the edition received today there is an article about the Thousand Cankers Black Walnut Disease. I had not heard of this. I love turning black walnut and now we have something else to worry about. The link to the article is http://www.finewoodworking.com/item/...nkers-disease? Going to a related link within the newsletter, the website http://www.thousandcankerdisease.com/ lists confirmed populations are scattered throughout western states of Washington, Oregon, California, Idaho, Utah, Colorado, Arizona, New Mexico and now Tennessee. For those that harvest and move black walnut around, this is something to be aware of to help prevent the spread of this disease.