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

The Sherwood Collection is mainly comprised of letters to and from Samuel Sherwood (1779-1862), his second wife Laura Bostwick Sherwood (1790-1863), and members of their family.
The DeWitt Community Library History collection contains photographs and images related to the history of and events occurring within the library.
Minute and treasurer books of the Delhi Equal Suffrage Club, along with a few letters and a photograph, dating from c1914.
The Douglass' Monthly is a newspaper created by Frederick Douglass, following the success of his earlier weekly publications. The newspaper relates to the abolitionist movement as well as other social reform topics.