| Description | 3 letters from Dr A A Seawright, Medical Research Council Laboratories, Woodmansterne Road, Carshalton, Surrey to F C Fraser, Mammalian Osteology Section, British Museum (Natural History). 1 letter from Dr A A Seawright to Judith E King, Osteology Section, British Museum (Natural History). File title 'hypervit A. Polar bears'. Mammal Department Letter Reference: GL 1966-25 |