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 brief letter of recommendation written to accompany the program of the Marnix Society and other related documents. This item was included with the packets mentioned in 1868.11, which were sent to intermediaries across the country so that they could elicit memberships in the Marnix Society from their friends and acquaintances. The letter presented the advertising materials for this campaign.