"Fonds topographiques l'Equisse structurale provisoire de l'Afrique (document ASGA)". © Unesco 1962. Original map is filed in the Map/Geospatial Center, a map reproduction is attached to companion volume. Companion text devotes the first chapter to a history of "Topographic mapping of Africa". Document established with the assistance of the Association of African Geological Surveys. 1961.