Kirk here feeling a bit surprised by the popularity of books on Kumamoto dialect (熊本弁). When I posted about “atozeki” here, it turned out to be one of my most popular posts:
https://www.facebook.com/Kumamotoi/posts/6666171880122854
It seems that lots of Japanese readers also have a fondness for Kumamoto dialect: This series is made up of three books!
Two of them can be found on Amazon but the third (in gold) is new and so you need to look on the Kumanichi site:
https://www.kumanichi-sv.co.jp/booksinfo/bookinfo/まっだしでヨカですか%E3%80%80熊本弁コージ苑ファイナ/
At least one other book about the dialect is available on Amazon and still others may have been published in the past.