Figure 1. Aeolian Pipe Organ Console
 
 

Figure 2.  Above the bass note pedals are three expression pedals,
labelled (left to right) Total, Exp. II, Exp. I.
 
 

Figure 3. The stops for Manual II are positioned at the left side of the console in two columns,
the left column for Exp II, the right colum for Exp I.
 
 

Figure 4. The stops for Manual I are positioned at the right side of the console in two columns,
the left column for Exp II, the right colum for Exp I.
 
 

Figure 5. The spoolbox with its 116-channel tracker bar.
 
 

Figure 6. The large pneumatic at the right of the spoolbox transmission moves the supply spool
laterally to keep the holes in the music roll centered over the holes in the tracker bar.
 
 

Figure 7.
 
 

Figure 8. Another view of the spoolbox.  The controls below the take-up spool are labelled
(left) Motor Swith, (center) Tempo, (right) Ventil-Off-Reroll.