Christ Church (Episcopal)
      Philadelphia, Pennsylvania
      Henry Erben, 1837 
      OHS ID: 9988
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      GREAT                        SWELL*                  
   16 Double Stop'd Diapason     8 Open Diapason
    8 Large Open Diapason        8 Viol da Gamba
    8 2nd Open Diapason          8 Stop'd Diapason
    8 Stop'd Diapason            4 Principal
    4 Principal                  4 Flute
    4 Nighthorn                  2 Fifteenth
2-2/3 Twelfth                      Cornet III
    2 Fifteenth                  8 Trumpet
1-3/5 Seventeenth                8 Oboe
      Sesquialtra IV (GG-b)        Tremulant
    8 Mounted Cornet V (c'-f''')
    8 Trumpet                      CHOIR 
    4 Clarion                    8 Dulciana
                                 8 Open Diapason
      PEDAL                      8 Stop'd Diapason
   19 Double Open Diapason+      4 Principal
   16 Open Diapason              4 Flute
    8 Principal                  2 Fifteenth
                                 8 Cremona
      COUPLERS            
      Sw to Gt    "A pedal to draw out at once in the 
      Ch to Gt    Great Organ the Nighthorn, the 12th,
      Gt to Pd    17th, Sesquialtra and Cornet.  A
                  Pedal to push in at once all the 
                  above stops."

*16 bass notes permanently coupled to Choir.  

+This is the pitch of the stop as listed in Ogasapian.
(perhaps full-length to 19', and then stopped?)
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[Received online from T. Daniel Hancock, 2012-08-23]