Bibliographies, catalogues
Bibliografie der Geschiedenis van Nederland. Dr. H. de Buck. H&S Publishers. Utrecht. 1979. Combined with: The Miss Margaret Sidney Davies complete collection of special Gregynog bindings, samenstelling Erik J. Warmenhoven en Steven A. Bakker. De Zilverdistel. Antwerpen. 1995 with cover + The Vatican Library, its history and treasures. Belser. Yorktown Heights. N.Y. 1989 in cassette + L'Exposition de la Miniature a Bruxelles. 1912 + another 9 works.
(total 13)