This instrument is described in Dwight's Journal Sept 17 1859 to have the same features as the instrument built for Appleton Chapel, mainly cone chests, a crescendo pedal, tri-pressure wind system (implying the use of a higher pressure for some stops or divisions as well as a higher pressure for the action). This instrument was additionally equipped with a reversed console and barker machine.

The key action is reversed, the organist looking away from the organ. ... The "Pneumatic Pressure" takes the labor from his fingers, and throws it back upon the bellows blower, so that the touch is never harder than that of a Grand Piano.

Updated through online information from Scot Huntington: The organ was not a success, and was rebuilt shortly after installation by Henry Erben. There is some suspicion gleaned from contemporary accounts of the Erben rebuild, that the reason for the technical failure of the Simmons is that may have used cone-valve chests, (Kegellade), which quickly succumbed to the Albany climate. The organ was rebuilt by J.H. & C.S. Odell in 1912. The church was closed in 1994, and has deteriorated badly in the intervening years. After several subsequent changing of hands and aborted plans for reuse, the building was deeded back to the city of Albany in 2013. As of this 2016 update, the building still sits crumbling and unused, with no clear plan for a mandatory multi-million dollar rehabilitation, or future. A survey of the Odell is needed to determine how much of the Simmons and Erben pipework may still survive, although the original Simmons 32' open wood Diapason is still extant, and can be glimpsed through the broken windows in the tower.

Updated through online information from T. Daniel Hancock.

Identified through online information from T. Daniel Hancock. -- The "American Musical Directory," Thomas Hutchinson, New York, 1861 reports "Size of organ--3 banks keys, 40 stops, 2-1/2 octaves pedals. Built by Simmons & Willcox, of Boston, in 1859."