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.

1934

[Postcard.]
In: Ds. J.E. Vonkenberg. Een levensbeeld door J. Snoep Jr.
Delft, W.D. Meinema [1934], facsimile facing p. 65.
Dated: Den Haag, May 29, 1919.
Postcard, see: 1919.10.