I've backpacked and skied many times in the high country of Colorado through huge stands of Engelmann spruce. I'm not certain of this, but I believe it is a tree associated with the high country, and,therefore, does not get very large in girth. It may be hard to find trees large enough and free of knots for soundboard use. One might try contacting local saw mills in Colorado. I know there's lots of Engelmann spruce in Summit County, CO. Ken Sloane. Oberlin Conservatory
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