Correspondence from Arthur G. Clarke to Angus Graham. These are: Letter from Arthur Clarke to Angus Graham thanking Graham for sending his work, Yin-yang and the nature of correlative thinking and expressing his views on what is needed in the scholarship of I Ching. Letter from Arthur G Clarke to Angus Graham in which he writes about his learning and asks for further recommendations. He sends a copy of his article to Graham. Originally located with a copy of Clarke's The rate of Change in the I Ching (Graham Collection).

Correspondence from Hal Roth to Angus Graham. These are: Letter from Hal Roth to Angus Graham concerning his personal situation, the possibility of tenure at Brown University or returning to Canada, and about his Su Sung work.With the letter are some translations notes to the Su Sung preface. Handwritten, 2 pieces. Letter from Hal Roth, Brown University, to Angus Graham concerning Graham's comments on his Su Sung's Preface which have been very helpful. He also writes about funding for Graham's possible stay at Brown University (See ACG/18/8). With the letter is a photocopy of some of the draft of Su Song. Handwritten with printed letterhead and photocopy, 5 pieces.