The Historical Archive of the New Apostolic Church in Western Germany serves as a vital resource for the church community and scholars alike. Located in a former church in Pulheim-Brauweiler, it operates as the second segment of the central archive, complementing the main church leadership archive in Dortmund. This institution houses a comprehensive library that includes nearly all German-language literature related to the New Apostolic Church, encompassing magazines, books, and various publications, both in print and digital formats.

In addition to literature, the archive features an extensive audio and video collection, recording services dating back to the time of Apostle Walter Schmidt. The archive also maintains a photo collection that documents the church's history, showcasing significant artifacts such as liturgical garments and historical worship items. Furthermore, it serves as the official church book office, preserving baptismal registers and assisting genealogical research. Through exhibitions and a rich repository of historical documents, the archive provides insightful glimpses into the church's evolution and community events.