Correspondence, in French, to his publisher, Edmond Deman, in Bruxelles, concerning Demolder's biography of Felicien Rops. Includes letter dated 10 July 1899, quoting letter of 14 July 1896, in which Rops gives permission for the reproduction of his works. The original letter from Rops to Demolder is included. Also includes three letters from Eugene's wife, C. Demolder-Rops.