Penobscot songs and dance, plus five untranslated spoken texts. Arthur Neptune, consultant. Recorded in June 1956, most likely in Maine.

Recording of Penobscot Language Master Cards. Also contains the original list of 1255 English words and phrases used in the recordings (47 p,); a phonetic transcription of the corresponding Penobscot for the first 333 cards, made by Evan Pritchard (10 p.); and a letter from Sister Helen McKeough of the Indian Island School to members of the Penobscot Nation explaining the contents of the tapes and circumstances of their recording.

These papers include letters, reports, accounts, and memoranda relating to the work of the American Board of Home Missions among the Abnaki, Cherokee, Chickasaw, Choctaw, Creek, Dakota, Mackinaw, Maumee, Mayhaw, Ojibwa, Osage, Pawnee, Penobscot, Sioux, and Stockbridge Indians of Arkansas, New York, and Oregon.

Frank Siebert (1913-1998) is one of the key contributors to the field of Algonquian linguistics. While he did not pursue a degree in linguistics or anthropology, he independently acquired the skills and knowledge of a professional scholar. His work on Penobscot is some of the best and most comprehensive in existence. The Siebert Papers document the interest and work of Frank Siebert in the linguistics of the Algonquian family of languages, particularly Penobscot. The collection includes correspondence, research notes, drafts and published manuscripts by Siebert, as well as secondary sources consulted by Siebert. To a lesser extent, it contains material that documents Siebert's personal life, his interest in book collecting and his career as a physician.