3. Gembloux, Duculot, 1935, in-8°, 252 pp, printed in 1150 copies on featherweight paper. Contains a series of articles on the bookhistory of the ancient duchy of Brabant (with Brussels) e.g. Prosper Verheyden on bookbindings, Paul Faider on manuscripts, A.Vincent on printing in Brussels before 1800, in Louvain before 1800 etc.