Very good. One-page letter on engraved letterhead (ca. 8" x 11"), accompanied by original mailing envelope addressed to Mammie Green of Pelham, South Carolina. Letter has folding creases, one 1/4-inch split along a fold. Very good. George H. Wilson (1866-1949) of Louisville, Kentucky, received a patent for his "artificial eardrum" in 1892. A primitive hearing aid, the simple device was made of rubber and "so-shaped that it can be quickly and readily removed and replaced without pain, and when in position is invisible, not liable to irritate, and is a good sound conductor." With the aid of a strong advertising campaign (which essentially implied that the product could cure deafness), the device sold well, despite being denounced as quackery by the mainstream medical community.