"Sketch of Major Houghton's Track to Bambouk, with his intended route to Tombuctoo," from Daniel Houghton, Elucidations of the African geography. London, Printed by W. Bulmer and Co., 1793.

Hieronymus Tochtermann, [Specimens of illumnation and Calligraphy], 1754, p. 12. George Arthur Plimpton Manuscripts 093 1754