Letter to William Osler, October 18, 1866
Letter to William Osler, May 10, 1866
Letter to William Osler, October 29, 1866
Letter to William Osler, November 30, 1866
Letter to William Osler, September 29, 1866
Letter to Jennette Osler, May 25, 1867
Letter to William Osler, February 13, 1867
Letter to William Osler, January 11, 1867
Letter to Jennette Osler, May 25, 1867
Descriptions of specimens from W.A. Johnson's note book, 1859-67