Gorgeous early ink signature, "Thomas A. Edison, May 26, 1878,” on an off-white 4.5 x 2.5 card, with faded ink stamp: "The Laboratory of T. A. Edison, Menlo Park, N.J., U.S.A." In fine condition. The patent for Edison's photograph had been issued just a month earlier on February 19, 1878. A classic, early example of Thomas Edison's iconic 'umbrella' autograph from a major period in his career as an inventor. Encapsulated in a PSA/DNA authentication holder.
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