Research institutes and historical societies can often help identify primary sources.
Primary sources are original materials or artifacts created during the time period under study. Different disciplines may have varied defintions of primary sources.
To find primary sources in the Cheng Library Online Catalog, consider using the following terms in combination with your topic
Many archives and special collections offer online access to selected primary sources. Other types of primary sources include news articles from a specific time period, journal articles presenting original research, recordings.
Here's a link from the University of Notre Dame to a select list of francophone authors. Consult the Literature Resource Center for more authors.