An authentic narrative of the loss of the American brig Commerce : wrecked on the western coast of Africa, in the month of August, 1815 : with an account of the sufferings of her surviving officers and crew, who were enslaved by the wandering Arabs, on the great African desart, or Zahahrah; and observations historical, geographical, &c. made during the travels of the author, while a slave to the Arabs, and in the empire of Morocco / by James Riley ; preceded by a brief sketch of the author's life; and concluded by a description of the famous city of Tombuctoo, on the River Niger, and of another large city, far south of it, on the same river, called Wassanah; narrated to the author at Mogadore, by Sidi Hamet, the Arabian merchant ; with a new, valuable, and interesting appendix ; illustrated and embellished with eleven copperplate engravings.