This book is a reproduction of Philoxenos Dolabani’s handwritten catalogue of the Syriac, Karshuni, and Arabic manuscripts located in St. Mark’s Syrian Orthodox Monastery in Jerusalem, one of the most important Christian manuscript collections in the Middle East. Dolabani was one of the greatest scholars of Syriac of the twentieth century and this manuscript is an important resource for all interested in Syriac and Christian Arabic. A lengthy introduction by Bishop Gregorios Yohanna Ibrahim contains information about Dolabani’s life and works. This is the first volume in a three-volume series which also includes Dolabani’s handwritten catalogues of the manuscripts of Dayr al-Za‘faran and other Syrian Orthodox collections in the Middle East.