Letter It is private letter. The author informs of his illness, meditates on his life: "preparing for the worse, to hope for the better". He remembers the unforgottable trip around the US, tells his plans and current affairs. Date: 08.07.1987 Original document language: English Authors: Andrei Petrovich Ershov Persons: Niklaus Wirth Addressee: Don Aufenkamp