This was the stoplist as Ken Simpson left it.     
GREAT    
 8     Diapason    
 8     Melodia *    
 8     Dulciana *    
 4     Octave    
 2     Blockflote  
       Mixture III    
       Chimes        

SWELL     
 8     Gedeckt *    
 8     Viola Pomposa    
 8     Viola Celeste    
 4     Spitz Principal   
 4     Harmonic Flute *    
 2     Flautino *   
 1-1/3 Larigot    
 8     Trompette   
 4     Hautbois     
       Tremulant        

PEDAL    
16     Violone    
16     Lieblich Gedeckt *   
 8     Violone (ext)   
 8     Lieblich Gedeckt (ext) *   
 4     Choralbass
       Rauschpfeife II

* indicates pipes definitely from the Estey Organ.  There might be additional ones. Last I heard, 
the organ was still working.