I would like to know how do I suggest an important correction about the date of the death of the character Mary Corleone, which is recorded as having been in 1980, when it was 1979. The proof of this is given by the scene when Kay arrives at the train station in Italy to see Anthony's debut. In the poster shown by Mary, it shows the show taking place on a Saturday, April 14th. If you check the calendar, April 14 in the year 1980 falls on a Monday. In the year 1979, 14.04 is Saturday.