A History of the Monks of Syria, by Theodoret of Cyrrhus (Collegeville, Minnesota, 1985), translated with an introduction and notes by R. M. Price, in 258 bookmarked and searchable pdf pages. Maps and additional resources appear as attachments to the document. Scanned by Robert Bedrosian. Wikipedia has an entry on Theodoret, who lived in the 4th-5th centuries.
From the book jacket: "The Syrian monks of the fourth and fifth centuries led lives at the opposite extreme from the culture of Graeco-Roman cities. Unwashed, unkempt, often homeless, usually poorly educated, making a positive virtue out of physical deprivation, they shocked and appalled cultivated pagans. Even Christian townsmen had to overcome Hellenic prejudices before they could see in these uncouth figures the spiritual paragons of the age. Yet the Christian laity of the day, led by their clergy, admired and revered them, and flocked to them to behold living examples of true perfection.
In his Religious History [the present work], Theodoret, bishop of Cyrrhus, recorded the extraordinary lives of these men (and women) of God, and the—to us quite unfamiliar—spirituality which they spectacularly embodied."
1. James (of Nisibis) 2. Julian (Saba) 3. Marcianus 4. Eusebius (of Teleda) 5. Publius
6. Symeon the Elder 7. Palladius 8. Aphrahat 9. Peter (the Galatian) 10. Theodosius
11. Romanus 12. Zeno 13. Macedonius 14. Maësymas 15. Acepsimas
16. Maron 17. Abraham 18. Eusebius (of Asikha) 19. Salamanes 20. Maris
21. James (of Cyrrhestica) 22.-23. Thalassius, Limnaeus, John 24.-25. Zebinas, Polychronius, Asclepius 26. Symeon (Stylites) 27. Baradatus 28. Thalelaeus 29. Marana and Cyra 30. Domnina Epilogue: On Divine Love