"4. Antwerpen, De Sikkel, 1941, in-4°, 162 pp + 110 b/w ills. h.t., publisher's half cloth with d.w. Index. Study on the role of Rubens as an illustrator for the Plantin Press. Published as Volume IV in the series; Maerlantbibliotheek. Not in Freitag. Text in Dutch."