Letter to William Osler from Robert Fletcher, Surgeon General's Office, U.S. Army Medical Museum and Library, Washington, D.C., USA. Fletcher writes of the work of Nicolaus Praepositus of 1471, generally regarded as the earliest dated medical book. Letter found in fly leaf of Osler's copy of "Antidotarium," 1471. Includes manuscript notes.

Letter to William Osler from R.W. Chapman, The Clarendon Press, Oxford, Oxfordshire, England. Chapman writes of various editions of Gaddesden's works. Letter and notes found in Osler's copy of John Gaddesden's "Rosa Anglica, 1st ed," 1492.

Letter to William Osler from Alexander R. Simpson, 52, Queen Street, Edinburgh, Scotland. Simpson writes of Osler's research on Jean Astruc.

Letter to William Osler from A.R. Neligan, British Legation, Tehran, Persia. Neligan has just received Osler's letters from earlier in the year, as the post has just returned to regular service for the first time since 1917. He reports that Sa'eed is well and that he has just sent Osler a rare work by Avicenna. After consulting with Sa'eed, Neligan believes they should postpone repairs of the Tomb of Avicenna at Hamadan until 1920.

Letter to William Osler from A.R. Neligan, 62, Park Lane, Croydon, England. Neligan has heard that Osler is anxious to obtain old manuscripts of Avicenna's works and poems, as well as a photograph of his Tomb. Neligan will ask his local Tehran friends to find books for Osler. He sends his own photographs of Avicenna's tomb, taken during his visit to Hamadan in the summer of 1910.

Letter to William Osler from A.R. Neligan, British Legation, Tehran, Persia. Neligan supports Osler's plan to restore the Tomb of Avicenna at Hamadan, and suggests that he, Funk, and Sa'eed form a local Committee to administer the money for the project.

Letter to William Osler from Edward Revere Osler. Revere reports on the activities of his battery and how they are surviving through the war. He has put a bid on several books, which he hopes will soon reach his parent's home at Oxford.

Letter to William Osler from Edward Revere Osler. Revere reports on his activities at the front. He looks forward to reading the birthday letters he just received from both parents. He expects to be off the battlefield by January and to be given two months rest, during which time he could spend a few days at home in Oxford. He writes that he never knew how much he loved his family and Oxford before he left them behind to join the war effort.

Letter to William Osler from Jonathan Hutchinson, 15, Cavendish Square, London, England. Hutchinson attributes his winning the Moxon medal to the "indulgent judgment" of friends like Osler.

Letter to William Osler from Walter Hines Page, England. (Telegram). Accepts his invitation.