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 Kuyper reports to G. Groen van Prinsterer that he does not have any objection to being put forward as a candidate for the Second Chamber in the election slated for June 13, 1871, but that for many reasons he must defer any decision actually to become a member of Parliament until after he has been elected. Kuyper requests him to publish this letter in the next issue of Nederlandsche Gedachten.