In 1995, Rosenberg recorded his memories on tape, and with writer Ulrich Enzenberger he published Das Brennglas in 1998.Michael Grobbel notes the book's 'colloquial and at time laconic style', as a result of the book staying true to its oral origins, and explains how Rosenberg discusses the continued 'persistance of racial intolerance after 1945'.
It was published as A Gypsy in Auschwitz in 1999, translated into English by Helmut Bölger. The book features an introduction from former Lord Mayor of Berlin Klaus Schütz.
According to author of Representing the Holocaust in Children's Literature, Lydia Kokkola, it is 'one of the very few books about the Gypsy Holocaust for young readers'. The book is recommended by Doris Bergen as further reading in her book War and Genocide: a Concise History of the Holocaust.
Oh wow, such a sad story of a childhood so cruelly snatched away. I just couldn't put this book down. The effect on future generations was so touching.
This book is a heavy read but such an eye opener. After learning so much about the war and how the Nazi’s treat people, this shone a light on to a minority of people also affected by the Nazi’s who without reading this book I wouldn’t have known were also affected and treated poorly during the war.