Service/Technical Manuals -(click)
Repair Parts & Supplies -(click)
Testing the Player Piano -(click)
Player Technicians Listing -(click) Player Piano Makers -(click) Player Piano Roll Makers -(click)
Here are some more pictures of a drive system that appears to be identical to the one above. However, this system uses a mechanical tracking mechanism.
The system was identified as an Artemis-Krell by D.L. Bullock.