This month we take you to Stuttgart ,Germany “The Institute for the History of Medicine”s archives house the private papers of Samuel Hahnemann, of his second wife Mrs. Mélanie d’Hervilly and of important students and successors. Besides 55 medical case books and various manuscripts, over 5,400 letters to Hahnemann from patients are included. the archive harbours the world’s most important collection of sources on the history of homoeopathy. The Institute’s existence is indebted to industrialist Robert Bosch in the history of health care, especially homeopathic medicine. Prof. Dr. phil. Robert Jütte is the director of this institution.