Two beautiful Black Walnut "boards" for work. The thickness runs from 1/8" to 1/4", nearly veneer, and 12" x 81" at their maximums. I ran across these at a local woodworkers shop in the almost scrap bin; $2.00/ea. Will return the Black Walnut stain/ink I made into drawing/painting with these boards creating a whole new work of art. Wood in its natural being is already a work of art and we'll be collaborating with the energetics of its' innate woodness...

previous post on my Black Walnut dye making;
http://gregpatch.blogspot.com/2012/09/black-walnut-juglans-nigra.html

The largest known living Black Walnut tree is on Sauvie Island, Oregon. (note the Elf Spirit to the right of tree)

Ten-power magnification of a cross-section of a black walnut board - this particular board is over 140 years old, demonstrating the durability. 

photos of tree & magnification are sourced from Wikipedia.