[1] Nieboer, "Slavery as an Industrial System," 257-348.
[2] "The Ewé Speaking Peoples," 222.
[3] "Historical Researches," 181.
[4] "Narrative of an American Sailor," 55.
[5] "Travels in North and Central Africa," II, 379.
[6] "Reise von Mittelmeer nach dem Tshad-See," I, 344.
[7] "Travels Through the Interior of Africa," 490.
[8] "An Account of the Empire of Morocco," 282.
[9] _Ibid._, 288.
[10] "Account of the Empire of Morocco," 292.
[11] _Ibid._, 295.
[12] "Le Grand Desert," 228.
[13] _Ibid._, 251.
[14] "Tunesia and the Modern Barbary Pirates," 65.