BioStor
 | Birds of Kenya and Uganda, being addenda and corrigenda to my previous paper in " Novitates Zoologica " xxix 1922 (1932) Novitates Zoologicae Tring 37: 252-380 |
 | Scientific results of a fourth expedition to forested areas in East and Central Africa. Birds (1942) Bulletin of The Museum of Comparative Zoology 89: 217-275 |