Passport of Mathieu Muller, born in Diemeringen, issued in Marseille in 1941, and El Salvador citizenship certificate of the Klein family
- French passport of Mathieu Muller, born in Diemeringen, France, on 13 August 1895, issued in Marseille in January 1941. His wife: Alice Rachel (Bauer). Their daughters: Florine born in 1927, Miryam born in 1928, Judith born in 1932, Edith born in 1935 and Mireille born in 1936. They escaped to Switzerland in 1942;
- an excerpt from the book "Emissaries" written by Alexandre Rotenberg about his meeting with the lawyer Mathieu Muller in Marseille in August 1942,...
Memoirs of R. Zvi Hirsch Procel (b. Wieruszów) concerning his life in Wieruszów, Zdunska-Wola, and five camps—Buchenwald, Buna, Auschwitz, Posen, and Spaichingen—in 1939–1945 and his journey to Eretz Israel after the war.
- Oral memoirs of R. Zvi Hirsch Procel:
Attending yeshiva in Wieruszów; the war breaks out on September 1, 1939; bombardment of the city; the family (seventeen members) flees Wieruszów; bombardments on the way; the family reaches Łódź; the Germans enter Łódź on September 8, 1939; the memoirist's parents and sister, Perl-Ryfka, return to Wieruszów; cruelties and dispossession en route by...