- ‘Der ‘Lutzenburgii typus’ des Antwerpener Verlages Gerard de Jode. Ein Neufund und neue Erkenntnisse zur ältesten gedruckten Landkarte des Herzogtums Luxemburg,’ in: Hémecht 60 (2008), pp. 173 – 190 (in collab. with Peter H. Meurer).
- ‘Die Eifel-Alben der Kunstanstalten Bernhoeft und Schaar & Dathe. Ein Wettlauf um das schönste Foto-Album der Eifel,’ in: Eifeljahrbuch 2010, pp. 156 –
- ‘Charles Bernhoeft et ses concurrents de Trèves,’ in: Edmond Thill (ed.), Charles Bernhoeft, photographe de la Belle Epoque, Luxembourg: Musée National d’Histoire et d’Art Luxembourg, 2014, pp. 413 – 441; ibid.: ‘Catalogue des albums de Charles Bernhoeft,’ pp. 621 – 721 (in collab. with Fernand Gonderinger and Edmond Thill).
I am regularly called upon for expertise and consultancy by a number of archives, libraries and museums both in Luxembourg and in Germany. I feel especially committed to helping the regional libraries to develop and care for their collections. In my capacity as vice president of the fundraising friends, I devote a great deal of time and energy to the Stadtbibliothek Trier, which houses an internationally renowned collection of manuscripts (Ada-Evangeliar, Codex Egberti …), and one of the foremost collections of incunabula in Germany. Besides my commitments on the cultural front, I also am an active sponsoring member of the Römerstrom Gladiators Trier, and as such I support competitive and professional basketball playing in the Trier-Luxembourg area.