Data from page 156, "Rebuilding the Player Piano", by Larry Givens,
(C) 1963 by the Vestal Press.
1. Soft pedal
2. Sustain pedal
3. Rewind to play (end of roll)
4. Lowest playing note
61. Highest playing note
62. Additional instrument on
63. Rewind
64. Mandolin on
65. Shutoff (end of song)
When correctly connected, the lowest playing note is
36C (MIDI notation), two octaves below Middle C (60C).
The span is 58 playing notes, the highest being 93A.