This dictionary is based on various printed authorities (Zeisberger, Heckewelder, etc.) and contains a separate dictionary of Indigenous place names arranged by states. Maps beyond Lenape territory may contain Powhatan, Susquehannock, Mohegan-Pequot, Quiripi-Unquachaog, Carolina Algonquian, and Pamlico place names.

Six editorial corrections to Heckewelder, "Account of the history, manners, and customs of the Indian nations, who once inhabited Pennsylvania and the neighboring states, Transactions of the Historical and Literary Committee of the APS (1819) 1: 1-348; with page references, "in case a new Edition ever is made. Concerns religion, warfare, marriage and family life, childbirth, swimming, and fears. Never printed. Prepared for John Vaughan, but should be compared with Heckewelder's suggestions for revision in his correspondence with Du Ponceau.

This diary records David Brainard's sermons and travels among the Indians of New Jersey and Pennsylvania.