Items in New York Heritage are organized into collections, which provide additional context for understanding their significance and meaning.

Margaret Woodbury Strong amassed an outstanding collection of dolls and toys which formed the basis for The Strong Museum in Rochester, New York. This collection, spanning from the late 19th century through mid-20th century, includes photographs, news clippings, and ephemera relating to Margaret Woodbury Strong’s life and her collections.
The Maurice Leyden Collection consists of diaries, photographs, correspondence, financial records, essays and military records of Maurice Leyden. The collection also includes twenty-two diaries, dating from 1860-1886 and written Sarah Woodruff Pottle, a relative of Mr. Leyden, as well as, four diaries spanning the years between 1897 and 1908 and belonging to Blanche Leyden, Maurice Leyden's daughter.
Military Memories & Veterans' Voices was a program held at the Library on December 3rd, 2017. The collection consists of five oral histories and photographs.
Scenic postcards highlighting communities of Mastic, Mastic Beach and Shirley.
Documents pertaining to the history, significant locations, and events primarily within the Mastics-Moriches-Shirley communities.

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