Letter to Maude E. Abbott from William Osler, Canton, Massachusetts, USA. Compliment on her work. Suggestion to add information on fetal endocarditis in the Endocardium section. Mention that the book should not be marred in any detail by anyone, because she should get full credit for her book. Museum's mission is education. He assures her that Adami will help her and that he is interested in her work. Mention that her Museum System will be included in his book on the System which is delayed.