The Aeolian Skinner was combined with chests and pipework from other organs to enlarge the instrument over time by Charles Glandorf, who was organist of the church at the time and assisted by Brant Duddy & Richard Alexander.

Combined in 1977 with a 3/28 1952 Aeolian-Skinner relocated from the Eighth Church of Christ, Scientist, NYC; the St. Peter's website says: The instrument began as a 1951 Casavant Frères organ, a gift of Mr. and Mrs. Arch Flower. In 1977, St. Peter’s purchased another organ from the Eighth Church of Christ, Scientist at 103 East 77th Street, New York City. This instrument was a 1952 Æolian-Skinner organ built by G. Donald Harrison, and its pipework enlarged the Casavant instrument already installed at St. Peter’s. [It is] the product of organ builder Brantley Duddy and consultant Richard Alexander." The console looks like a Moller, though.

Identified through information adapted from E. M. Skinner/Aeolian-Skinner Opus List, by Sand Lawn and Allen Kinzey (Organ Historical Society, 1997), and included here through the kind permission of Sand Lawn:
Aeolian-Skinner Opus 1219 (1952), originally in Eighth Church of Christ, Scientist, New York City, and relocated here when it was replaced by Wolff organ.