Lateral and front views of horn of rhinoceros from the White Nile. Specimen obtained from Belgian officers at Lado by Captain Claude Hawker, commander of the 10th Soudanese Batallion in autumn 1902.
Fig. 21 in Sclater, P.L., 1903. Exhibition of, and remarks upon, the horns of a rhinoceros from the White Nile. Proceedings of the Zoological Society of London 1903 November 3: 194-195, fig. 21
