Thanks David
russ

MMLH
[from back to front, as you hold it to play...]

wle.

MMLH on "some" but not all one row instruments..
As described.. common to Cajun instruments but some builders do alter that arrangement...specifically for enhanced airflow..and a different sound than "Cajun"

I think the physical arrangement is as Larry says, for most cajun boxes. The progressive octave arrangement is LMMH.

I know that on my Hohner it is LMMH (back to front)
I assumed Cajun accordions were set up the same.

Don

My Regal is MMLH.