An Aeolian organ I am aware of that retains its original console is Memorial 
Presbyterian Church, here in St. Louis.  This is Op. 1791 of 1930, a large 
three manual instrument designed by T. Tertius Noble.  The console was 
rebuilt by Quimby Pipe Organs in 2009.  The console had not been working 
reliably for more than twenty years.  The combination action and relays in 
the organ were completely worn out and as no replacement parts were 
available, it was necessary to solid state the console and relays. The 
original combination action was carefully boxed up and stored in the church 
and the original relays are still in place in the chambers nevertheless. 
The original stop tabs, keys and pistons have all been retained, and the 
carefully refinished console is thus unchanged in appearance from the 
original -- not even an extra piston.  The double-touch system -- which 
coupled the manual and pedal divisionals on the second touch and had not 
been working for years -- has been reinstated.  The unusual feature whereby 
the Crescendo Pedal was canceled by the General Cancel piston has also been 
retained, using a Heuss motor to operate it.  The instrument is now fitted 
with multiple memory levels, and the controls for this have been used to 
cover an ugly hole in the woodwork left by the original blower switch.  This 
is flat and to the right hand side of the keyboards and not readily 
noticeable.  The console has been made moveable for the first time, and when 
brought to the middle of the chancel enables the divisions to be heard in 
much better balance than before.

This instrument is also to the best of my knowledge the only Aeolian of its 
period that is tonally original, no tonal changes ever having been made.  It 
has the later pitman form of Aeolian electro-pneumatic action and a phased 
restoration of this is being undertaken by QPO, again without any changes. 
The instrument is perhaps an indication of why the Skinner firm took over 
Aeolian -- around 1930 they were building such fine organs that they 
represented a considerable threat to Skinner.

[Posted to PipeChat December 30, 2009 by John Speller.]