Letter to Rockefeller, August 28, 1919
Letter to Alexander Dougall Blackader, August 28, 1919
Letter to Andrew Henderson, August 9, 1919
Letter to Arnold Carl Klebs, September 2, 1919
Letter to Arthur Keith, August 30, 1919
Letter to Campbell Palmer Howard, August 1919
Letter to Charles Daniel Parfitt, August 24, 1919
Letter to Charles Joseph Singer, August 2, 1919
Letter to Flora Pollack, August 9, 1919
Letter to George Cheyne Shattuck, August 6, 1919