G'day Wes.w,Do you know if there is an image of that 1846 concertina tutor somewhere? (I will search for a web site for "the Centre for Free Reed studies in New York" ... they sound even worse than me!)
I would be interested to see if it the same as the one of which I have a copy - or else the source of some of those textual references on which I based my dating of 1845 (+/- 3 years).
Regards,
Bob Bolton