VW Beetle car clubs around NRW

Hello

I'm really interested in buying eventually an old VW Beetle. Does anyone know of any VW Beetle car clubs or how I can find the nearest one, I live in Essen but anywhere in the surrounding areas is fine.

Google for "Käferclub" ... Käfer = VW Beetle

These guys are in Düsseldorf:

http://www.kaeferfachhandel.de/index.html

No idea if any good, just go past the place on the way to work each day...