Letter to William Osler, 1891(?)
Letter to Henry Vining Ogden, October 12, 1891
Notes from acknowledgements and title page, 1892
Letter to Henry Vining Ogden, January 7, 1892
Letter to Henri Amédée Lafleur, January 10, 1892
Letter to Henry Vining Ogden, January 18, 1892
Letter to Henry Vining Ogden, November 8, 1892
Letter to Henri Amédée Lafleur, November 11, 1892
Cushing's notes
Cushing's notes, 1893