2. Liège, H. Vaillant-Carmanne, 1921, in-4°, frontspiece, 16 pp, printed paper wrapper, excellent condition. Lucien Renard-Grenson (1876 - 1919) was a famous archeologist, worked in the province of Liège and thereabouts, and studied Roman remains and coins. The brochure ends with the list of his publications.