Letter to William Osler, April 13, 1886
Letter to William Osler, April 13, 1889
Letter to William Osler, April 14, 1908
Letter to William Osler, April 16, 1897
Letter to William Osler, April 19, 1866
Letter to William Osler, April 2, 1918
Letter to William Osler, April 2, 1967
Letter to William Osler, April 2, 1967
Letter to William Osler, April 20, 1887
Letter to William Osler, April 20, 1917