(1823-05-08) Bonamy, J; Great Britain. Army. Royal Engineers
Map depicts a defined area of the Somerset district east of its border with the Graaf-Reinet district. The Sneeuberg range between the Great Brak and Teebus Rivers forms the northern border.
(1823-12-10) Bonamy, J; Great Britain. Army. Royal Engineers
The eastern border of the territory is shown by the by the Great Brak River, from its confluence in the south with the Great Fish River, to the point at which it reaches the Ysterberg Peak in the north. The western border is formed by the Seekoei River. There is an inset of a portion of the Seekoei River north of the Agter-Renosterberg.