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 Robert Fletcher, The Portland, Washington, D.C., USA. Fletcher reports on his progress with the Index-Catalogue. He writes about recent acquisitions of rare volumes of the U.S. Army Medical Museum and Library. He hopes to meet with Osler in Munich.