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.
A second open letter, written in reply to De Savornin Lohman’s rejoinder in De Heraut, no. 775, October 30, 1892. With respect to the discussion about taking courses at “unbelieving” universities (which students at the Vrije Universiteit were doing because they would ultimately have to take their qualifying examinations at these institutions), Kuyper believed that significant pedagogical issues were at stake. By contrast, De Savornin Lohman was addressing the question from a methodological perspective. In this letter Kuyper states his opinion that “it is better to leave this matter for further consideration among the professors.”