Letter to Harvey Cushing, June 3, 1920(?)
Letter to Harvey Cushing, April 8, 1920
Cushing's notes on Osler ancestry
Letter to Harvey Cushing, March 7, 1921
Cushing's research notes
Cushing's notes, Osler's character
Cushing's notes, Osler's ancestry
Cushing's notes, Mrs. Simcoe
Letter to Elizabeth Osler, July 7, 1831
Letter to Featherstone Lake Osler