28 books
Concise Dictionary of Proper Names and Notable Matters in the Works of Dante (Classic Reprint)
A Dictionary of Proper Names and Notable Matters in the Works of Dante - Scholar's Choice Edition
A Dictionary of Proper Names and Notable Matters in the Works of Dante - Primary Source Edition
Epistolae; The Letters of Dante. Emended Text with Introd., Translation, Notes ... by Paget Toynbee
History of the Letters of Dante from the Fourteenth Century to the Present Day (Volume 5)