Photocopies of eight signed typed letters in English, from Pierre Teilhard to Walter Granger and two signed typed letters in English, from Walter Granger to Pierre Teilhard, from August 7, 1924 to November 8, 1936. Originals of some of these letters may be found in the Granger Collection.
Photocopies of four signed typed letters in English, from Pierre Teilhard to Walter Granger and one signed typed letter in English, from Walter Granger to Pierre Teilhard from October 10, 1937 to April 17, 1941.