1- Leo Belgicus, An illustrated and annotated carto-bibliography - H.A.M. van der Heijden - Alphen a/d/ Rijn, Canaletto, 1990 - - 113 pp - laminated softback - 32 x 23 cm. Language: English. Condition: as new. Revised second edition of this sought-after overview work of the famous "Lion-maps" of the Netherlands" c.q. the "Leo Belgicus-maps". 2- Eenheid op papier. De Nederlanden in kaart van Keizer Karel tot Willem I - H.A.M. van der Heijden, Jan Roegiers a.o..- Leuven, Uitgeverij Davidsfonds, 1995 - 136 pp - laminated softback - 24 x 17 cm. Language: Dutch. Condition: as new. Published at the occasion of the exposition by the same name.in the Onze-Lieve-Vrouw-ter-Predikheren, Leuven, 1994. (total: 2)