PB
Pery Broad
Pery Broad, also Perry Broad, was a Brazilian-born German non-commissioned officer in the Schutzstaffel (SS) active at Auschwitz concentration camp from April 1942 to 1945. He reached the rank of SS-Unterscharführer while working as a translator and stenographer in the camp headquarters. As a prisoner after the war, he wrote a historically valuable account of the camp's operation, dubbed the Broad Report.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

KL Auschwitz Seen by the SS
1998
ISBN 9788385047322