Contract dated April 24, 1957 is signed in bold blue ballpoint by the only man in history to retire undefeated as Heavyweight Champion. Book contract with publisher Prentice Hall was for the rights to Rocky Marciano’s book entitled, Boy’s Book of Boxing and Body Building (published 1960). Contract is 7 pages, legal size and in EX-MT condition with bold ink signatures from all three: Marciano, Charley Goldman (trainer), & Al Bachman. Marciano’s signature grades a strong “8” out of a possible 10. LOA.