"The Righteous: The Unsung Heroes of the Holocaust" by Sir Martin Gilbert (Henry Holt and Company, $35).
On Jan. 19, 1942, Rabbi Jacob Schulmann of Grabow Synagogue wrote to his community in Lodz:
"Alas, to our great grief, we now know all. I spoke to an eyewitness who escaped. He told me everything. They're exterminated in Chelmno, near Dombie, and they are all buried in the Rzuszow forest."