- Journals and Letters of Stephen MacKenna
- Sources From Which Plotinus Drew Extracts From Plato's Dialogues
- Plotinus: The Ethical Treatises Being the Treatises of the First Ennead With Porphyry's Life of Plotinus and the Preller-ritter Extracts
- The Enneads Volume 1
- Extracts from Porphyry's Life of Plotinus