Place names (taken from deeds of conveyance and maps, and narrated by Indians) for Pennsylvania, New Jersey, Maryland, and Virginia, together with names and biographies of chiefs and famous men. Translations included.

Letters relating to American Indian languages, Moravian missionaries, various Heckewelder publications. Some of the replies from Du Ponceau are copied in the letter books of the Historical and Literary Committee.

This one-volune collection, consisting of three manuscripts bound together, was previously named "Names of various trees, shrubs, and plants in the language of the Lennape [sic], 1840" after one of the manuscripts in it. It consists of Nottoway terms, organized according to a variety of categories; a Lenape (Delaware) word list relating to English botanical terms, along with Latin terms; and an English-Algonquian-Lenape comparative vocabulary.