These are databases owned or subscribed to by Boatwright Library which contain full texts.
Access Greek material (with Latin translations) relevant to the study of the history of the Christian Church from its beginnings through the Council of Florence in 1439. This database contains the writings of church leaders who wrote in Greek, including both the Eastern "Fathers" and those Western Christians who wrote before the Latin takeover of the West in the third century. Note: Search the index for specific content. (Religion and Technology Center, Inc.)
Search for Latin texts written from classical antiquity to the Middle Ages to the present. (de Gruyter Brill)
You can also search for "accent tags" on Youtube. There is a specific list of words to read and questions to answer and people from around the country (and world) have recorded themselves to provide examples of their local speech.