Karte der Baptisten in Ostfiriesland
<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Maximilian Dörrbecker</a> (<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Chumwa</a>)
CC BY-SA 2.5
Self made, using <a href="//commons.wikimedia.org/wiki/File:Ostfriesland_fr.svg" title="File:Ostfriesland fr.svg">this base map</a> created by <a href="//commons.wikimedia.org/wiki/User:Enricopedia" title="User:Enricopedia">Enricopedia</a>