Letters from Llewelyn Powys to Jack Wallis Some 80 letters and postcards from Llewelyn Powys to Jack Wallis beginning 1932 and ending just before Llewelyn's death in 1939, many undated. [Note: Powys left for Switzerland in December, 1936 so any letters with the Clavadel address are 1937 to 1939. A number of them are concerned with The Book of Days] 1932-1939