The following links are not currently ordered in any way. They are merely a few of the most interesting or useful pages I have come across so far.

Harry Geuns
Harry is a very professional and truly expert bandonion and concertina maker in Belgium. He is the supplier of the mini hybrid bandonion shown on the instruments page of this web site, which he modified to Atzarin specifications. His site has loads of very interesting photos and numerous different keyboard layouts for bandonions and several sound files too! I stronlgy recommend a visit to the Collection pages and make sure you check out the foot bass and sound files.

intuitive instruments for improvisers
Excellent site, packed with quality information. Make sure you have a clear mind before trying to get your head around the Atlas section!

Melodeon.net
Great, well organised site for information about melodeons and diatonic accordions and anything related. Good collection of user friendly diagrams of different keyboard layouts and very clear and useful explantions on Voices and Tunings and a nice list of accordion builders. Excellent forum with very enlightening posts.

Concertina.net Discussion Forums
This excellent forum with posts on anything related to free reed instruments is a wealth of in-depth information and lively discussions.