R.N. Certificate for the Educational Test, Part 1, 18/06/1920; Admiralty letter to Griggs on the occasion of his release from Naval Service, 27/03/1946; Admiralty letter informing Griggs that he was found medically unfit for Naval Service, 10/09/1952; Admiralty recall letter recruiting for the Reserve and Auxiliary Forces for 18 months service, 06/06/1952.