From an inheritance we were able to acquire a unique testimony of Catholic Apostolic church music for the Brockhagen archive. It is a manuscript printed accompanying book for organ to the German Catholic Apostolic Hymnologium (hymnal) from 1865, probably intended to accompany the Hymnologium edition of 1864. The original book still needs some attention in terms of conservation, but we can already publish a photographic digital copy here.
