- Outlines of a grammar of the Vei language; together with a Vei- English vocabulary and an Account of the discovery and nature of the Vei mode of syllabic writing
- African native literature, or Proverbs, tales, fables, & historical fragments in the Kanuri or Bornu language. To which are added a translation of the above and a Kanuri-English vocabulary
- Narrative Of An Expedition Into The Vy Country Of West Africa: And The Discovery Of A System Of Syllabic Writing, Recently Invented By The Natives Of The Vy Tribe
- Narrative of an Expedition Into the Vy Country of West Africa, and the Discovery of a System of Syllabic Writing, Recently Invented by the Natives of the Vy Tribe
- Grammar of the Bórnu or Kanuri Language









