Working with known letters, it took this form:

In one of his last known letters he wrote:

The last known letter to her mentor is dated 1650 and makes clear that she was still fully active.

There are no known letters between them from after the time Service went to Dawson City.

This is the text of Gertner's last known letter:

His latest known letter is dated 3 September 1507.

His last known letters came from Brussels in 1816 and less is known of his later life.

He once told his son James, "Two short sentences will generally answer any known letter."

The following table lists the known letters and writings of Handel.

Her last known letter was written in January 1563.