Letter to Lewellys Franklin Barker, May 15, 1912
Letter to William Osler, May 3, 1912
Letter to Adolf Meyer, May 1, 1912
Letter to James William White, April 25, 1912
Letter to James Tyson, April 25, 1912
Letter to Henry Phipps, April 25, 1912
Letter to Jesse Myer, April 25, 1912
Letter to Henry Barton Jacobs, April 25, 1912
Letter to William Sydney Thayer, April 21, 1912
Letter to Henry Barton Jacobs, August 27, 1923