Updated through on-line information from Philip Maye. -- This is the earliest known organ built west of the Allegheny Mountains, by earliest known organbuilder this far west. It remained within the Downer family until 1920, when it was loaned to the Carnegie Museum, now Carnegie Museum of Natural History (CMNH), and and spent part of the next 40 years on loan to the Historical Society of Western Pennsylvania, to whom it was finally given in 1986. Another Downer organ was offered to the CMNH in 1978, but was turned down; it is unknown if this survives to the present.

Identified through on-line information from Philip Maye. -- One rank has a 25 note compass, though it's currently unknown specifically which rank belongs to that toeboard.