Documento
Area between Rivers Zambesi & Ruvuma. Compass traverses - War Office ledger. Blue-prints. Compiled by No. 6 Topographical Section R.E.
Blue-prints ranging in scale from 1:126,720 to 1:760,320. They portray hydrology, relief by form lines, roads and tracks, railways, settlements, cultivation and place names, and include topographical notes.
The British LibraryNo. 6 Topographical Section R.E., Compiler
1918