Letter, 25 December 1949
American machinery replacement policy, 1946
Letter, 11 February 1945
Letter, 11 October 1944
Letter, 25 May 1943
Letter, 4 July 1943
Letter, 25 July 1943
Letter, 25 January 1943
Letter, 17 January 1942
Correspondence - Ingersoll-Rand, war work, Feb 1942-Feb 1953