Nigerian bird notes: records, recognition, habitat, distribution in Nigeria, breeding season, c.1950s-1970s, 1991
Notes relating to bird species in The Birds of Tropical West Africa, vols. 5-7, by David Armitage Bannerman, c.1950s-1970s. Includes a letter from Peter Clement to Elgood, Aug 1991.
- c.1950s-1970s, 1991