Mission to the niger 4v. V1. Journal of Friedrich Hornemann's travels from cairo to murzuk in the years 1797-98 and the letters of major Alexander Gordon laing 1824-26 1964 V2. Bornu Mission 1822-25 Part I . 1966. V3. Bornu Mission 1822-25 part 2 1966. V4
par: Bovils, Ew