Ernst Gräfenberg Ernst Gräfenberg Ernst Gräfenberg (September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City, United States) was a German-born physician (medical doctor) and scientist. He is known for developing the intrauterine device (IUD), and for his studies of the role of the woman's urethra in orgasm. The G-spot is named after him. Gräfenberg studied medicine in Göttingen and Munich, earning his doctorate on 10 March 1905. He began working as a doctor of ophthalmology at the university of Würzburg, but then moved to the Department of Obstetrics and Gynaecology at the University of Kiel,
Ernst A. Lehmann as a guest during the "Hindenburg"s last flight. The book had recently been published in German when the "Hindenburg" was destroyed. The English translation, completed by Jay Dratler, was published later in 1937 with a preface and closing chapter by the American airship captain Charles E. Rosendahl, who had interviewed Lehmann on his deathbed. Ernst A. Lehmann Captain Ernst August Lehmann (12 May 1886 – 7 May 1937) was a German Zeppelin captain. He was one of the most famous and experienced figures in German airship travel. The "Pittsburgh Press" called Lehmann the best airship pilot in the world, although