Tracey wrote: 'As a child struggling with my Nan’s death, I wrote to PM Bob Hawke, to help my young mind understand why we die. His letter back to me is my most treasured childhood memory!'
In the letter, Bob Hawke ponders the meaning of death saying: 'Some people die because of unfortunate accidents, sometimes because they become so ill because doctors are unable to hep them recover.
'Perhaps when we get very old our bodies get worn out, or certain parts break down, like parts in an old car. None of us can be sure how long we will live. Because this is so I think you should try not to think too much about dying.'
The former Prime Minister who was in office from 1983 to 1991 is survived by his wife Blanche d'Alpuget.