- Grammar of the Language of the Lenni Lenape or Delaware Indians
- Grammar of the language of the Lenni Lenape or Delaware Indians
- Address delivered before the Law Academy of Philadelphia, on the opening of the session 1831-2.
- A memoir on the history of the celebrated treaty made by W. Penn with the Indians ... in 1682.
- Mémoire Sur Le Système Grammatical Des Langues De Quelques Nations Indiennes De L'amérique Du Nord ...