The red leather-bound book, which bears the signatures of the U.S. soldiers who found it in Hitler's apartment, is expected to sell for more than the estimated value of $12,000 to $15,000.
Ben-Gurion was in his 40s and married when he corresponded with Rega Klapholz, a 26-year-old Jewish Viennese medical student he met in the early 1930s.