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

The miscellaneous collection is made up of various objects primarily dating to the mid 19th century.
Documents pertaining to the history, significant locations, and events primarily within the Mastics-Moriches-Shirley communities.
Books, photographs, memoribilia, and other documents from the Mastic-Moriches-Shirley Community Library.
Historical maps from Mastic, Mastic Beach, Shirley, Brookhaven, and Moriches communities on Long Island
Video presentations from residents who have lived in the tri-hamlet communities most of their lives.