Hi fellow enthusiasts.  Can anyone lead me to an index, table,
or method of determining when a particular pianola roll was first
produced?  I am trying to determine when rolls were originally cut.
Did the manufacturers keep a log of their rolls and when they were
cut, and is there access to such a log?

Even a simple table would be helpful, e.g., QRS 1941 zzzz - zzxx,
Mastertouch 1925 Dxxxx-Dyyyy, type of thing.  Any input appreciated.

Kevin Collins