Rabbi Shmuel Burstein is the author of "The War Against God and His People," by Targum Press. He is a Holocaust Studies educator and lecturer, and interviewed members of the families for this story. The British Government paid tribute to Leopold Socha in their permanent exhibition on the Holocaust, located in London''s ''Imperial War Museum.'' There, the manhole cover from Lvov, used by Socha, can be seen. A fuller account of this story can be found in "In the Sewers of Lvov," by Robert Marshall. Krystyna Chiger''s memoir, "The Girl in the Green Sweater: A Life in Holocaust''s Shadow," will be released September 30, 2008.