SEGOGNE (Henri de) and COUZY (Jean). Les Alpinistes célèbres. Paris, Mazenod, 1956. Fort in-4°, bound in publisher's cloth (without dust jacket). First edition, illustrated with a colour frontispiece by Léon Gischia and 177 black and white plates. Portraits of the great mountaineers, guides and amateurs, from their origins to the Second World War, followed by a history of the conquest of the world's mountains. Inventories of peaks by massifs with mention of the first ascents of the main routes. Index of named climbers and summits. An essential basic work on the history of mountaineering. Also included: - FRISON-ROCHE (Roger): Les montagnes de la Terre. Paris, Flammarion, 1964. 2 forts in-4°, bound in publisher's cloth with illustrated dust jackets. With 735 black and white photographs, 60 hors-texte plates with 144 colour photographs and 52 maps including 16 in colour. A veritable mountain encyclopaedia. - CASELLA (Georges) : L'alpinisme. Paris, Lafitte, 1913. In-8°, paperback, illustrated cover. With numerous vignettes in the text. A work dealing with the technical and historical aspects of mountaineering. Set of 3 encyclopaedic works on mountains and mountaineering, constituting irreplaceable documentation.