If one is thinking of adding a player to a pipe organ  in order to play
88-note piano rolls.  I do not suggest you try it.  They sound terrible!

I believe that there were some organ rolls made for the 88-note tracker
bar, however most of these rolls are scarce and utilize complex
multiplexing systems, or are severely limited in capability.

Perhaps a modern computer-type player using pre-recorded player organ
information would be a lot less work and produce pleasing music
designed for pipe organ.

Bruce Clark