Congo and Ruanda Burundi. (1951). Carte Géologique du Congo Belge et du Ruanda-Urundi. Liège: Royaume de Belgique, Ministère des Colonies. Four quarter folded sheets, each 70 x 72.5 cm folding to 30 x 21 cm, colour lithographs, 1:2,000,000 scale. Together with Notice Explicative de la Carte d’Ensemble, 4pp, and Légende Générale, 4^th edition, 40 pp. All fitting into accompanying envelope. All maps in pristine condition, bright, clean, unmarked apart from library stamp on back of each map. Accompanying reports are as pristine with single light library stamp on covers. The envelope is extremely worn and torn along all edges but just intact, again with light library stamp on front. Overall in very good condition ranging from poor for envelope to near fine for maps and reports.

The base survey is dated 1947, the map was completed in 1950 and the reports published in 1951.