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

Historic photographs of various military installations on Montauk.
A collection of issues of the Mill Whistle, a periodical published by the Berst-Forster-Dixfield Co. of Plattsburgh N.Y. to be distributed to employees serving overseas in the armed forces during the Second World War.
Military Memories & Veterans' Voices was a program held at the Library on December 3rd, 2017. The collection consists of five oral histories and photographs.
This collection is composed of documents and images of Merrick residents who served their country in various wars. The collection will expand as identities become known and further research has been performed.
Scrapbook listing the name of militia enrollees from Tuxedo Park.