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

A leading business in Elmira, NY for more than 80 years, Thatcher Glass once produced 50 percent of the milk bottles in the United States, pioneering sealed glass bottles and automated bottle production. The collection includes archival material such as design drawings, correspondence and other company documents.
Directories of the residents of Delmar, Elsmere, and Slingerlands, New York.
This collection contains issues of the Tupper Lake High School yearbooks, as well as commencement programs and senior annuals, published between 1917 and 1978.