Declaration of Independence signer Dr. Benjamin Rush # K;ATE1600 from the Benjamin Rush OakThis light chatoyant brown pen with a dark knot in the middle with a metallic blue acrylic check mark in it was made from the Benjamin Rush Oak, a tree planted over the grave of Declaration of Independence Signer Dr. Benjamin Rush, by the Women's Temperance Society. For more items from this site click here or try my Etsy site here. Pen Features. Alternate hardware.