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.
In this letter to the editor, Kuyper objects to the Rev. W. Diemer’s publication of a private letter that he had written to Diemer more than three years previously. In the letter that Diemer made public (see 1882.02), Kuyper had written that he greatly wished for church union among all the Reformed churches. However, Diemer thought that Kuyper had sounded a completely different tune in a recent article in De Heraut. Kuyper totally disagreed with this charge. J.H. Donner (1824–1903), the editor in chief of Wekstem, added an editorial note next to Kuyper’s letter stating that he very much disapproved of making private letters public.
Two short editorials about the confidentiality of the correspondence appeared shortly thereafter in De Standaard, no. 3042, February 17, 1882 and no. 3050, February 27, 1882.