Letter to Harvey Cushing from Thomas McCrae, 1627, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae was told by the College of Physicians in London that Osler became a Licentiate of the College in 1873. He then took the College examination and was given membership in 1878.

Letter to Harvey Cushing from Thomas McCrae, 1627, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae draws Cushing's attention to the animal parasite, "Sphyranura Osleri," named after Osler. This was written about in the Journal of Morphology, Vol. I, No. I, September 1887.

Letter to Harvey Cushing from Thomas McCrae, 1627, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae remarks that Osler often used the title M.R.C.P. (Member of the Royal College of Physicians), as he did on a paper entitled, "Notes of Intestinal Diverticula," in the Annals of Anatomy and Surgery, 1881, IV, #5, November. Osler and Allbutt were elected Fellows to the College in 1883. Allbutt delivered the Gulstonian [sic] Lecture in 1884. McCrae will send an account of a dinner for MacAlister in which much is said of the formation of the Royal Society.

Letter to Harvey Cushing from Thomas McCrae, 1929, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae informs Cushing that Osler never used the type of stethoscope mentioned in Medical News of 1885, as long as he knew him. He believes Osler must have introduced the instrument in Montreal before going to Philadelphia. He invites Cushing to stay with him during the Surgical Meeting in October.

Letter to Harvey Cushing from Thomas McCrae, 1929, Spruce Street, Philadelphia, Pennsylvania, USA. Precision brought by McCrae on the their book Modern Medicine (in USA) and A System of Medicine (in the English Edition). In the first edition, only Osler's name appeared while in the second edition both names appeared (Osler and McCrae). McCrae listed the articles produced by Osler in each volume.

Letter to Harvey Cushing from Thomas McCrae, 1627, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae corrects Cushing's information regarding Osler's Ingersoll Lecture on Science and Immortality in 1904.

Letter to Harvey Cushing from Thomas McCrae, 1627, Spruce Street, Philadelphia, Pennsylvania, USA. McCrae has gathered a number of letters from Osler, which he now sends to Cushing.