Find primary sources in the Coates Library catalog by using the keyword "sources" in an advanced search as pictured below. Be sure to limit your search to the subject field.
You can also locate primary sources by working through secondary ones. Scour those notes and references! Use Interlibrary Loan to obtain items Trinity doesn't have. To find primary sources at other libraries, use the same advanced search technique on WorldCat.
Latin texts, from Antiquity through the patristic period, Middle Ages, and early modern and modern eras.