Both institutions are in close connection to each other. While the ethnographic collections from the missionary lands of the Moravian Church found a permanent place in the museum that was founded in 1878, the archive primarily holds written and visual documents from the time of the Herrnhut mission. Its previous history dates back more than 600 years to the time of Jan Hus († 1415). Historic books pass on the old Bohemian-Moravian Unity of Brethren. Portraits in oil depicting the family of Duke Nikolaus Ludwig von Zinzendorf (1700-1760) have been preserved. On his property the renewed Unity of Brethren was built in 1727. Zinzendorf and members of the Unity of Brethren corresponded with many contemporaries in Europe.