EDISON, THOMAS. 1847-1931.
Document Signed ("Thomas Alva Edison"), 1 p, legal folio, [New Jersey, c.1886], light creasing, two small holes and an ink splash to top.
BOLDLY SIGNED PETITION RELATING TO THE DEVELOPMENT OF AN IMPROVED PHONOGRAPH. The document states that Edison is currently engaged in experiments for an improved phonograph and he incloses a description of the invention (not present) preparatory to applying for a patent.