Five of Eilís Dillon's books for young people, and just one detective story, were published in Holland (also covering the Flemish-speaking market, and usually stating two places of publication, such as Haarlem and Antwerp, or Utrecht and Antwerp). Three different imprints were involved, but all six publications came from the same publishing group, Het Spectrum / Spaarnestad, founded in 1906 and specializing in low-cost editions sold outside the regular booktrade [On the background of this firm, and their search for non-scandalous Catholic literature from foreign lands, see the entertaining essay by Adriaan van der Weel, "Scouting for Popular Fiction between the World Wars," in New Perspectives in Book History, ed. Marieke van Delft et al (Zutphen, Walburg Pers, 2006)]. Among the translators listed below, Fie Zegerius and J.P.D. Baas-van Dijk appear to have been well-established in their profession.