''I am vain enough to believe that this diary may be found hundreds of years from now and serve as an important source of information...'' In early 1943, Mirjam Levie from Amsterdam, began to write letters to her fiance Leo Bolle, who had immigrated to Eretz Israel a few years earlier. Her letters, which were never sent, were written during the deportations from Amsterdam, her incarceration in Westerbork, and her imprisonment in Bergen Belsen. As secretary in the ''Jewish Council of Amsterdam,'' Mirjam's letters are the only source remaining to describe events from the viewpoint of one of its members. The book presents these unique and moving letters, forming a personal diary of real time.