The Springer Publishing House commemorates the 150th birthday of Wilhelm Conrad Röntgen with the third edition of the Röntgen biography by Otto Glasser. With enthusiasm and attention to detail, Glasser has compiled information, anecdotes, and personal insights about Röntgen. The reader can feel how groundbreaking Röntgen's discovery of the new rays was. This biography, which was originally published in a second edition in 1957, is expanded by introductory words from Professor Peters, Director of the Institute for Clinical Radiology at the University of Münster. All in all, this book is an enjoyable journey into the history of medicine.