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).

These papers include letters, reports, and journals relating to Indians, Moravian missions, and communities at Salem (N.C.), Bethlehem (Pa.), and Gnadenhütten, Muskingum, and Fairfield in Upper Canada. Also included are personal correspondence and an autobiography. Contains 86 letters, journals, reports, etc., pertaining to the travels and missionary activities of Heckewelder, mostly in German. 7 journals, memoranda, and miscellaneous materials of David Zeisberger, pertaining to his years with Indians. Many of the former materials were utilized and published by Paul A. W. Wallace (1958); the latter includes Zeisberger's Memoranda on Indians; Journey to the Six Nations, Nanticokes and Shawanees in April, 1752, to July, 1752; Conrad Weiser, Observations made on the pamphlet entitled "An enquiry ... [1759]"; Birth records for the 1780's at Friedenshutten and Gnadenhütten; Catalogue of Indians baptized by the United Brethren, 1765-1814 (721 names); and a memorandum of Zeisberger on the Onondaga.