Series XV contains documents related to Algeria and Eastern Morocco. Proximity, trade, and migration have made for close ties between the Jewish communities on either side of the border between Algeria and Morocco. Box 29 contains two prayer books for the High Holy Days written in Algeria, one from Constantine and the other from Annaba in northeastern Algeria. Box 30 contains a variety of other documents from Algeria, mainly from communities in the northwest, such as Oran, Tlemcen, Mostaganem and Algiers, and from communities in northeastern Morocco, such as Debdou, Oujda and Taourirt.