Updated through online information from James R. Stettner.
The 'History' page of the church website states, "Music was provided by a bass violin and later a hand-pumped organ until1892, when a pipe organ operated by water was installed. This organ was later adapted to electric power and served until 1960 when a 3-manual Austin pipe organ was donated by Gertrude Hotchkiss Heyn in memory of her mother."
Identified from company publications as edited and expanded in The Hook Opus List 1829-1935, ed. William T. Van Pelt (Organ Historical Society, 1991).