Tom Hutchinson seems to be correct: these organs are turning up
everywhere.  Here are two others.

There is an Aeolian pipe organ in Lyndhurst, the Gould mansion in
Tarrytown, N/Y.  It is a bit peculiar: the tops of some of the bass
pipes protrude through the chamber ceiling into the console room above.

There's a roll playing organ of some kind in the Ringling Mansion in
Sarasota, Fla.

Eric Stott 
Albany, NY