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. www.ccel.org/g/gardner/cell/cell15.htm
Letter to Sister Christopher - Letter by St. Catherine of Siena, about St. Agnes of Montepulciano. www.bps.sa.edu.au/cal/agnes.html