Be sure to check the laws in your area regarding wild harvest of plants. They put some new ones into effect in PA a few years back. You may want to check in to ethical harvesting methods as well, that is if you want to continue harvesting in the future.
I saw/read about one very old complete root system that was harvested and displayed in a shadow box frame. It sold at auction in Japan for over $100,000. I'm sure you could find a photo of it if you did some searching. Apparently, it was unusually large as well as old.
