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

The Long Island Historic Postcard Collection consists of postcards of towns and villages in Queens, Nassau, and Suffolk Counties of New York dating from the 19th and 20th centuries.
This collection is a collection of World War I-era postcards that were a gift to Union College from William Nelson Potter Dailey, a member of the class of 1884.