30th Anniversary Limited Edition of which this #344 of 2500. Blue cloth cover with gilt design and title on spine, dust jacket protected by mylar, signed by Charles Hamilton with inscription to previous owner front endpaper and also signed by Kenneth Schwartz, publisher on title page. Touted as the most in-depth reference guide for the different proxy signatures produced by the autopen machines used by President John F. Kennedy. Also included is an overlay sheet titled Eight Robot Signatures creased at right lower edge, a 12 page addendum, and a letter from Kenneth Schwartz explaining why he had to republish the 1965 edition.