Les Baluba (Congo Belge)
A 1913 Brussels ethnographic study by Pierre Colle and Cyrille van Overbergh on the Luba people of the Belgian Congo, aimed at a scholarly readership. The pictures are plain line drawings of material culture: a measured diagram of a tree-like form, a conical thatched dwelling cut away to show its interior, a fishing trap set in reeds, and a numbered board game grid with counters. A designer might take their clean, diagrammatic line work and numbered labelling as models for technical illustration.
