It makes you think about how drums travelled back in the day. You couldn't just have a drum overnighted from anywhere in the world vie UPS or FedEx. (And there certainly was no internet with which to locate a drum, purchase it, and track the package!) So geography is one reason that so many of these antique instrument haven't travelled all that far over the course of time.
This was the world according to George B. Stone & Son as of 1914: