Letter to Harvey Cushing from Minis Hays, American Philosophical Society, 104 South 5th Street, Philadelphia, Pennsylvania, USA. Hays does not believe that Osler attended the International Congress of Medicine at Philadelphia in 1876. He suggests that Cushing consult the original registration manuscript kept in the Library of the College of Physicians in Philadelphia.

Letter to Henry Vining Ogden from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. Osler sends words of congratulations. He offers to send Ogden a copy of Stewart's lecture on Digitalis from the Canadian Medical & Surgical Journal.

Letter to Henry Vining Ogden from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. Osler saw Cantlie, who is looking well and thriving in Chicago. He relates news of Marian Francis and her children. Osler plans to go to England from March to the end of April, and will miss the Association meeting in New Orleans. Includes manuscript notes.

Letter to Henry Vining Ogden from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. Osler will inform Ogden if Dr. Vineberg decides to relocate to Milwaukee. Jacobs has been encouraging Vineberg to stay on in New York. He discusses Walt Whitman's(?) medical condition.

Letter to J. Collins Warren from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. Osler will go to Montreal to assist in the opening of the new buildings of the McGill Medical School with Pepper. As a result, Osler will miss Warren's lecture at the Philadelphia Pathological Society. Additional notes by Warren. Includes manuscript notes.

Letter to Henry Vining Ogden from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. He writes of his trip to Montreal to attend the wedding of Percy Bath and Ruth Whitney. Informs Ogden of the death of Dr. Lafferty from Pembroke. Tells of his plans to remain in Toronto for the summer.

Letter to F. Roberts from William Osler, 131, South 15th Street, Philadelphia, Pennsylvania, USA. He writes to decline an invitation as he will be leaving town.

Letter to Henry Vining Ogden from William Osler, 1502, Walnut Street, Philadelphia, Pennsylvania, USA. He reports on his latest visit with Marian Francis and family, and on some medical cases. He notes that Jared Howard is to marry Miss Smith on February 9, 1888.