Books: nine works on Ukiyo-e - Grosbois, Ch., 'Shunga Frühlingsbilder. Studie über die erotischen Darstellungen in der japanischen Kunst', Genf, 1968, with 155 plates and illustrations; R. Crighton, 'The floating world: Japanese popular prints 1700-1900', London, Victoria and Albert Museum, 1973, current provenance: The Stolk Collection