Hello Andrew,
The adress you need is below its the Katasteramt Cloppenburg, they have saved the old Löninger maps.
You can mail to Peter Eichfeld the email adress is on the site.
Greetings Betty Krull
http://www.gll.niedersachsen.de/live/live.php?navigation_id=10771&article_id=50898&_psmand=34
Martin en Betty Krull
Raiffeisenstrasse 5
49832 Beesten Dld
05905-945175