(Bruxelles), Commune de Saint-Gilles, s.d. (1969), in-8° oblong, 16 x 24 cm, 38 pp, black.white illustrations, text in French. Sewn, orig. stiff wrapper (slightly discoloured and dustsoiled). Published on the occasion of the opening of the Horta museum in Brussels, with texts by Jean Delhaye, the architect who participated in the restoration of the Horta House.