A truly Herculean achievement. Never before has a single researcher dared to shoulder such a task alone – this is one of many assessments with which the specialist press welcomed the original edition published in 2003 as a standard work. The biographical dictionary provides reliable and verifiable information about the activities of the most important individuals during and after the time of National Socialism. Klee systematically collected and continuously updated biographical details about the key figures while working on his numerous books for decades. This allowed the present work to grow steadily and mature into a solid reference work. At the end of the book, there is a detailed bibliography. With its 4,300 keyword entries, "the Klee" effortlessly overshadows all competing works.