1. Go to Henry.
2. Click on Advanced Search.
3. From this screen, add your search terms to one or more search boxes. Then, add the words primary source* to another search box.
All results will be primary sources OR include some primary source material.
How do I know if the source is all primary sources or just includes some primary source material?
The library indicates sources that are fully primary sources with a genre heading (see example here):
Sources that have both primary and secondary material are marked with the phrase "Includes primary source material" in the Notes (shown here).
Full-text coverage of The Sunday Times (London, UK : 1822-2006), and The Times (London, UK : 1785-2014), and a collection of 19th-century U.S. newspapers
Searchable full text of the complete run of the New York Times, including full page and article images (1851 - current)
Coverage dates: 1851-current