Microfiche or microfilm is another source for print sources. Microfiche preserves documents by miniaturizing them on plastic cards, which can then be read using a special machine. With a library's microfiche collection, you can obtain access to rare books, newspapers, or manuscript collections. The Mack Library has several microfiche collections of private papers, including the following:
Another valuable microfiche collection is Early American Imprints (M-Fi 015.73), which contains everything printed in British North America and the United States before 1800. The Mack Library also has the New York Times in microfiche, which you can use to learn about the historical context of your subject.