If it is any help to you, I note that the Chopin F minor Prelude (Roll
#68650) was recut a number of years ago by Play-Rite as the first item on
their program roll "Chopin Program No. 27."  It may be somewhat easier to
find a copy of this than to unearth an original.  I have a copy of a cut
version of this program roll but do not wish to part with it.  (Some
pieces were removed by a friend who needed them. The leftovers, which
I have, contain the complete 68650.)  Nevertheless I have no problem with
lending it for duplication if so needed.  Lots of luck in your quest.

Jim Heyworth,¶
Sechelt, B.C., Canada