LEROUX (Gaston) and Maurice LEBLANC. Together 6 bound volumes. Paris, Pierre Laffite, 1910-1918. 6 volumes in-12, brown half-chagrin, title-pieces, cover (Period binding). Le Château noir. Paris, Pierre Laffite, 1916. Confitou. Paris, Pierre Laffite, 1917. Rouletabille chez Krupp. Paris, Pierre Laffite, 1918. 813. Paris, Pierre Laffite, 1910. Le Bouchon de cristal. Paris, Pierre Laffite, 1912. L'Éclat d'obus. Paris, Pierre Laffite, 1916. Bindings rubbed.