Accordion Club of the Redwoods
Although this site is about piano accordions, I cannot help but think anyone interested in the material presented here will also be interested in seeing how concertinas are built. Bob Tedrow of Homewood Music in Birmingham, Alabama, has posted a photographic essay explaining how he builds custom concertinas. The level of craftsmanship he displays should be an inspiration to all of us. I think you will enjoy it.
Click here to visit his site in a separate window.