With the passing years, Kambanellis's work remained in manuscript form at his home. Subsequent world events, such as the assassination of US President Kennedy, caused Kambanellis to re-examine and update his manuscript. He then wrote two new chapters, which were eventually published in the Sunday editions of the Greek newspaper "Eleftheria" and caused a sensation. In December 1965, Kambanellis published his book "Mauthausen" with the "Themelio" publishers in Athens.