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.

THIS COLLECTION IS CURRENTLY BEING PROCESSED. THE INVENTORY OF CONTENTS IS IN PROCESS, AS IS THE ORGANIZATION OF THE COLLECTION. There are notes, transcriptions, essays, etc., on the language and customs of several Indian tribes. There are numerous vocabularies, dictionaries, and grammatical notes on the Ho-Chunk, Patwin, and Huave tribes, and some items on the Fox, Tukudh, Pomo, Wappo, and Wintu; 79 notebooks, in English and Ho-Chunk, on myths, legends, stories, customs, dances, religious observances, costume, etc., of the Ho-Chunk, with some on the Ottawa and Ojibwa; notes on Ho-Chunk history; 2 boxes of Ho-Chunk phonetic texts; and significant material on Mexican Indians (Zapotec). Some of the items are typed copies of Radin's published studies.

The James V. Neel Papers document nearly every phase of the career of one of the founders of human population genetics in the United States. Neel was particularly thorough and organized, and retained virtually all of his significant scientific correspondence, committee reports, minutes of meetings, and drafts of manuscripts. The collection also includes data collected during Neel's work among the Xavante, Yanomanö and other indigenous populations. In a career that spanned the period from the late work of Thomas Hunt Morgan and Charles B. Davenport to the contemporary world of molecular genetics and nucleic acids, Neel knew, worked with, and corresponded with many of the most influential 20th century practitioners of genetics. The collection begins in earnest in 1943, after Neel had decided to focus on human genetics. Neel's work with Drosophila and none of his Drosophila manuscripts are found in the collection.