One page, a large oblong, 408 x 582mm. (16 x 23mm.) edges reinforced from back at early date, two corners with tiny losses, clean tear in right-hand margin neatly mended, printed in crisp black ink on smooth-finish cream paper." /> EDISON, THOMAS ALVA. Document BOLDLY SIGNED (with a fine "Umbrella" paraph), A LITHOGRAPHIC PLAN FOR THE INCANDESCENT ELECTRIC LIGHT, witnessed by Charles H. Smith and George T. Pinckney, n.p., n.d. [1881]. <I>One page, a large oblong, 408 x 582mm. (16 x 23mm.) edges reinforced from back at early date, two corners with tiny losses, clean tear in right-hand margin neatly mended, printed in crisp black ink on smooth-finish cream paper.</I> | Christie's