The Coun­ter­feit Count­ess by Eliz­a­beth B. White, Joan­na Sliwa

The Jew­ish Woman Who Res­cued Thou­sands of Poles Dur­ing the Holocaust The astonishing story of Dr. Josephine Janina Mehlberg—a Jewish mathematician who saved thousands of lives in Nazi-occupied Poland by masquerading as a Polish...