Kampman copied this document at the request of John Gottlieb Ernestus Heckewelder "for the information of the [American] Philosophical Society," and Heckewelder transmitted it to the Society.

These are eighteen letters that mostly concern Indian linguistics. Regarding Zeisberger's Onondaga grammar and dictionary; Heckewelder's writings on the Indians; publications; question of whether or not any of the Lenape can pronounce the letter "r."

There are nine items on this reel, including letters concerning Indian affairs at Detroit, Indian lands and surveys of Moravian Indian lands on the Muskingum (with maps), estimates of settlers north of the Ohio (1793), and a report concerning the conduct of the British respecting the Indian war (1793).

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.

There are observations from 1802 to 1810 made by Heckewelder at Gnadenhütten, Pennsylvania, which continue those he made for 1800 [published in "Philadelphia Medical and Physical Journal" 1,2 (1805): 134]. There are also observations from 1810 to 1814 made by George G. Miller at Beersheba, Ohio, and from September 1-7, 1800 made by Christian Frederick Denke at Fairfield, Upper Canada [the latter printed in "Philadelphia Medical and Physical Journal" 1,2 (1805): 142].

This item includes notes, letters, and essays on the history, manners, and languages of the American Indians, sent to the Committee and to members of the American Philosophical Society. Contains answers to queries, historical material, Indian speeches, replies to letters of Peter S. Du Ponceau, references to the Lenni Lenape, Indian writing, translations of English into Indian languages.

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 is a journal of travels among the Indians to a conference in Detroit. Includes a list of the names of different Indian nations in North America, their locations, and number of fighting men. Also contains miscellaneous materials: a letter from Heckewelder to Mordecai Churchman, October 5, 1819; engraving of Heckewelder; letter of Maria Heckewelder to Matthew S. Henry requesting him to relinquish the volume and some Heckewelder letters.

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.