Museumsbäckerei Imsweiler - Imsweiler Muehle

In 1985 my sister lived in the little town of Imsweiler in RheinlandPfalz, Germany. This town has a population of about 600 people and is about 6 miles north of Kaiserslautern. In the town was a bakery and mill that had been in continuous operation since the 14th Century where I had the absolutely most amazing almost black pumpernickel bread featuring an astounding amount of whole grains. I have dreamed of that bread for 30 years, but have never made it back. 

I was just looking for the bakery on the internet and find it has been turned into a museum. Does anyone else have any experience with this bakery? Here are three webpages giving contact information and hours for the bakery/museum. Can someone visit and get the recipe for that pumpernickel bread and post it? I've been jonesing for 30 years.

http://kulturland.rlp.de/no_cache/suche/einrichtungen/e/museumsbaeckerei-imsweiler/

http://www.plurio.net/de/4/bid,12456/museumsbaeckerei-imsweiler.html

http://www.oeffnungszeitenbuch.de/filiale/Imsweiler-Museumsbaeckerei%2BImsweiler-773674R.html

Map:
https://www.google.com/maps/place/Imsweiler,+Germany/@49.5972716,7.7844625,13z/data=!3m1!4b1!4m2!3m1!1s0x4796055491e2e21f:0x422d4d510db2530