This file includes the following letters:

Matuda, Eizi 26 March 1952

Maxon, William R. 5 February 1932, 20 April 1939, 11 May 1939

McCart, William L. 23 February 1940 11 March 1940

McVaugh, Rogers 6 September 1938, 4 October 1938, 23 November 1938, 30 January 1939

Merrill, Elmer D. 17 March 1932, 17 June 1932, 27 June 1932, 2 August 1932, 6 August 1932, 10 August 1932, 3 September 1932, 13 October 1932, 26 October 1932, 9 November 1932, 7 January 1933, 12 January 1933, 12 January 1933, 6 February 1933, 27 February 1933, 8 April 1933, 26 July 1933, 20 October 1933, 17 November 1933, 27 April 1934, 4 May 1934, 10 May 1934, 10 September 1934, 12 March 1935, 17 April 1935