This image shows the exterior of Roslyn, Long Island's Trinity Episcopal Church that Katherine Alexandra Duer Mackay (US1797spouse1) built for the Church as a memorial to her father.
There are four images pertaining to the Church here in the Library, the first of which shows an artist's rendering of the interior of the Church, the second of which is this one showing the exterior of the Church, the third of which shows the Church parish house, and the fourth of which shows the interior of the Church.
Another image depicts a stained glass window of Mary., one of the numerous stained glass windows installed in Roslyn, Long Island's Trinity Episcopal Church that Katherine Alexandra Duer Mackay (US1797spouse1) built for the Church as a memorial to her father. The stained glass window is part of a larger stained glass window and appears to depict Mary, the mother of Jesus.
See Harbor Hill, Clarence Hungerford Mackay's Mansion.