Updated through online information from John Igoe.
Bynum Petty's book assigns Opus 74 to a different instrument: Immaculate Conception Church, Chicago. See database id 1068.
Identified through information in the Pilcher factory ledgers. For more information see the document referenced below.
56n man, 17n ped. Sold to First Congregational, Waterloo, IA
In the first lists, this organ was originally assigned number 55.
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