The Trappist abbey of Our Lady of Gethsemani in Kentucky (the house of Thomas Merton) owns the eclectic Dom Edmond Obrecht Collection of manuscripts, which contains not only medieval manuscripts but materials of interest for the study of the French Revolution. Most items are of Cistercian origin, but other monastic traditions are represented as well. Produced between 1140-1960, the collection was brought to the USA during the first part of the twentieth century. This catalogue is the first and only full codicological description of these manuscripts.