A revised and updated version of
Abraham Kuyper: An Annotated Bibliography 1857-2010 by Tjitze Kuipers (2011)
You can buy a printed edition of this book on the site of the publisher.
1915
The letter has been published with the headline: Ministerpräsident a.D. Dr. Kuijper über die Haltung Hollands [Former prime minister dr. Kuijper on Holland’s position]. In a short introduction the editor also mentioned that Kuyper stayed in Weisser Hirsch near Dresden to take a cure. Kuyper was introduced by the editor as former Prime Minister of the Netherlands and leader of the Anti-Revolutionary Party.
The editor had asked Kuyper about a question concerning the neutrality of The Netherlands and about the defence of its colonies. Kuyper replied in his letter to the editor that he came to Germany for health reasons, so he limited his comments on both questions to a few brief lines meanwhile wishing the press would not pay any more attention to his presence. Without any further comments, he enclosed three newspaper clippings with opinions and outlooks (from the Dutch minister of Foreign Affairs, a former Dutch minister of Internal Affairs, and a French Journal) on the aforementioned issues.