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.

1962

[Letter.]
In: Colijn. Momenten uit zijn leven. [Door] G. Puchinger. (Boeketreeks: no. 33.)
Kampen, J.H. Kok [1962], p. 117.
Letter, see: 1938.02, p. 332.