In 1975, James T. Dennison, Jr., discovered the handwritten notebook of Geerhardus Vos at the Heritage Hall Archive of Calvin Theological Seminary in Grand Rapids, Michigan. With the cooperation of Dr. Vos' daughter, Marianne Radius, and son, Dr. J. G. Vos, a copy of Professor Vos' Old Testament Eschatology manuscript was recovered. Although this manuscript was a mere fragment of a very large work, it was suggestive of Vos' interaction with the German critical schools.

The Board of Kerux launched a long-term campaign to publish all the previously unpublished Vos manuscript material. In 1995, the sermonic corpus from the handwritten notebook as well as published sermons released during Vos' lifetime, were gathered into one volume by the Banner of Truth Trust, Edinburgh, Scotland (and Carlisle, Pennsylvania). Reprising the title chosen by Vos himself in 1922 for a volume of his sermons, "Grace and Glory" contains sixteen sermons. These messages have been an immense blessing in the devotional life of God's people.

The Board has been raising funds outside of its general operating budget to publish the Old Testament Eschatology manuscript. In addition, numerous letters by Vos to Abraham Kuyper, Herman Bavinck and B. B. Warfield have been recovered, translated, edited and annotated. The Board of Kerux hopes to combine the eschatology manuscript and the letters in a volume to be released in a few years. A separate investment fund for the Vos project has been established to receive the tax-deductible gifts of those interested in furthering this project.