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.
This diary contains entries written by Fred Walster, who was a soldier in 153rd Regiment New York Volunteer Infantry, Company E. The diary spans from January through December 1865 and details his experiences during the war, as well as his civilian life shortly after the war ended.