One diary, 1917, and fragments of dairies, December 1915-October 1916, and March-November 1918, described by Wyn Griffith as 'All that survives of my War Diary!'. A reference to the death of his brother Watcyn, July 1916, is included. Wyn Griffith's autobiography based on his war experiences is Up to Mametz (London, 1931).