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

Charles Rand Penney was a prominent collector. The Charles Rand Penney Trail unites his collections of Pan-American Exposition souvenirs, Papua New Guinea artifacts, Niagara County historical items, Larkin Company ephemera, and Niagara Falls artwork.
A collection of historic 19th century paintings at James Prendergast Library.
This collection consists of letters and marginalia of Samuel Clemens, artifacts associated with him and photos having to do with Clemens' time in Elmira and the family and friends that comprised his circle.
Photographs of the birth place and a manuscript of Walt Whitman.
This collection contains photographs and diaries of the Watson family, who are known for their involvement with the Memorial Art Gallery.