Dave,
I have a roll, 4 x 8 or 10 ft that came out of Boeing surplus many years ago. I know that I have cut off less than a foot off to make 1 or 2 wings. Unfortunately you are probably 1700 miles from me in Utah and shipping would be prohibitive. Possibly I could have a strip sheared off and rolled to ship in a box. Alternately many have used rolled aluminum flashing available in the roofing section of your local home improvement store. It is available in various thicknesses including .010" in various widths from 6" to 12". I think it is a bit softer but makes very serviceable wings. The bends for the leading edge are made across the grain to prevent cracking.
There are a number of active speed flyers in Ohio that should be able to help you out.
Jim Rhoades