Letter, 25 December 1926
Letter, 30 May 1926
Letter, 8 June 1926
Letter, 19 June 1926
Letter, 6 May 1926
Correspondence - Ingersoll-Rand, 1921-1926
Correspondence - Ingersoll-Rand, 1921-1926
Letter, 30 May 1926
Letter, 30 May 1926
Letter, 28 May 1926
Letter, 19 May 1925
Letter, 24 August 1925