Letters of Catherine Benincasa
- In plain text (two versions) or as a zip file, from Project Gutenberg.
- http://www.gutenberg.org/etext/7403

Dialogue of the Seraphic Virgin Catherine of Siena
- Full text of book by St. Catherine of Siena. Algar Thorold translation. Available in several formats.
- http://www.ccel.org/ccel/catherine/dialog.html

The Dialogue of the Serafic Virgin Catherine of Siena
- Algar Thorold translation. Full text, with concordances and word frequency lists.
- http://www.intratext.com/X/ENG0139.htm

Divers Doctrines Devout and Fruitful
- From Henry Pepwell's little 1521 devotional collection, edited and with notes by Edmund G. Gardner as "The Cell of Self-Knowledge". Extracts from Raymond of Capua's Life of St. Catherine.
- http://www.ccel.org/g/gardner/cell/cell15.htm