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

Papers of Dr. Albert Leffingwell, including diaries, letters, and manuscripts from the 19th and 20th centuries.
The Green Lakes Collection is mostly comprised of photographs that belonged to Arvin Almquist, who was Superintendent of Green Lakes State Park from 1928 to 1948.
This collection contains yearbooks, clippings, and printed materials from schools in Baldwinsville, NY.
A large collection of color photographs of Adirondack buildings taken by Barbara Parness and given to Adirondack Architectural Heritage.
Materials relating to John and Margaret Bard and Reverend James Starr Clark, which illustrate the beginnings of St. Stephen's College, Trinity Church and School, and Trinity Academy.

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