More about missing item

Two of today's items refer back to the note a few days ago.

LETTER 1
1979 Letter from the postal authority which later became An Post saying why we couldn't be compensated for the radio that fell out of the parcel while it was in their care.
LETTER 2
1980 Further letter from the postal authority saying that they still couldn't find the radio
CALENDAR
1980 calendar. lots of entries on front page, but blank page by the time it got to the end of the year!