Letter to Harvey Cushing, August 8, 1821
Letter, 29 March 1856
Letter to William Osler, November 27, 1866
Letter to William Osler, November 27, 1866
Letter to William Osler, May 17, 1866
Letter, 13 October 1868
Letter, 12 October 1868
Letter, 26 October 1868
Letter, 15 May 1869
Letter, 2 September 1869