Updated through online information from T. Daniel Hancock. -- The "American Musical Directory," Thomas Hutchinson, New York, 1861 reports "Size of organ--3 banks keys, 35 stops, 2 octaves pedals. Built by E. & G.G. Hook, of Boston, in 1855."
The Hook organ was replaced by Austin, Op. 465 in 1913.
Identified from company publications as edited and expanded in The Hook Opus List 1829-1935, ed. William T. Van Pelt (Organ Historical Society, 1991).