Paul R. Marchesano on July 11th, 2025:
Known only from an article reporting its installation:
"--A New Organ--"
"F.J.N. Tallman, organ builder, is at work upon a large pipe organ with two manuals and pedals, which he will put up in the Opera House for the Music Festival next week.
John Hyatt Brewer, of Brooklyn, will be the organist.
The first rehearsal of the choral society was held ten years ago in the building in which the organs are now being built.
Mr. Tallman has the success of this Music Festival very much at heart, and the use of this organ, particularly in the performance of the "Creation," will be a crowning feature, which could not otherwise be attained."
Rockland County Journal, 7 June 1890 — Page 5
The Nyack Opera House was a 4-story structure at the corner of DePew Avenue and South Franklin Street. Operas, concerts, and political rallies were held there. The building was demolished for Nyack's Urban Renewal Project.
-- information from NY Heritage Digital Collections