The letters in this file include:

Gregg, C. C. 29 March 1938

Grover, Frederick 7 February 1936, 1 May 1936, 24 November 1936

Harrison, Bertrand 22 June 1933, 27 October 1933, 22 January 1935, 23 September 1944, 15 May 1935

Hartwell, Ruth 27 January 1938

Heady, Harold F. 2 November 1939

Henry, L. K. 1 September 1938

Henderson, L. F. 31 January 1928 (see Mathias, 27 January 1928), 25 April 1930 (see Mathias, 19 April 1930)

Hill, Arthur 30 May 1933, 31 May 1933

Hinton, Geo. B. 7 May 1938, 16 January 1941

Hitchcock, C. Leo 30 January 1934, 6 February 1934, 21 January 1935, 28 September 1937, 14 October 1937

Hoffman, Ralph 23 November 1931, 23 January 1932

Horner, Nell C. 9 October 1937, 10 November 1937

Howell, John T. 18 September 1930, 23 May 1933, 15 December 1933, 15 January 1934, 17 May 1934, 20 October 1934, 17 November 1934, 19 November 1937, 2 February 1938, 25 March 1938, 2 September 19?, 15 August 19?, 2 February 19?, n.d., n.d.

Humbert, H. 26 May 1933

Jennings, O. E. 14 February 1931, 30 July 1932