letter, 22/06/1928, H R H Blaneavis, Board of Maori Ethnological Research to H D Skinner, Enclosing a copy of a letter from Edward Harding via Sir Apriana Ngata expressing interest in skeletons he has seen in caves in Kaipara Heads which are missing their jawbones and asking if this is Maori cultural practice, also swamp drains - possibly pre-historic?