Audio recordings, primarily linguistic field recordings of Native American languges, removed from the James M. Crawford papers. The bulk of the recordings are in three areas: Alabama songs, stories, and fiddle music; Cocopa folklore, autobiographical stories, songs, and elicited words and sentences; Yuchi autobiographical stories, conversations, and elicitied word lists. Other material includes: Cherokee conversations; Chickasaw word and phrases lists; readings from a Chontal-Spanish dictionary; a Diegueño text; words lists and discussion regarding the Mobilian trade language (Yama); intermixed Mobilian, Choctaw, and Koasati word lists; Mohave songs, with explanations; a Navajo elicitation session, with interview and conversation; elicited Shoshoni expressions; Tolowa songs, Yavapai word lists and texts; and Yuki words and expressions. The small amount of non-Native American material in the collection generally consists of unidentified conversations, readings of English and Russian texts, and recordings of baby talk.

For many years referred to as the "Franz Boas Collection of American Indian Linguistics," this collection consists of a large body of linguistic and ethnographic material gathered together by Boas and many of his colleagues and students primarily from the 1890s to the 1940s. It contains the bulk of Boas's own fieldwork material, with the main exception of most of his Inuit and earliest Northwest Coast fieldwork. It contains the majority of the work sponsored by American Council of Learned Societies Committee on Native American Languages, which was directed by Franz Boas, Edward Sapir, Alfred Kroeber, and other academic linguists from 1927-1937. The collection, however, also contains related kinds of fieldwork and derived secondary materials created outside the auspices of this Committee, both earlier and later. The first deposit of the material arrivied in 1945. Subsequently, additional related materials were donated and added, as noted in the listings. Additionally, the documentary materials produced by some of the early projects (1945 to circa 1955) of the APS Phillips Fund for Native American Research were added to this collection. The collection has grown to over 80 linear feet of material representing at least 166 languages and dialects from the United States, Canada, and Mexico. The formats range from field notes and ethnographic texts to slip files, vocabularies, lexica, and grammars, and dozens of linguists and Native consultants are represented.

The papers contain correspondence, research and teaching notes, data (card and slip) files, published and unpublished manuscripts by Lounsbury and others, books and reprints, sound recordings, and computer programs and files. Correspondents include: William N. Fenton, Mary R. Haas, William C. Sturtevant, Morris Swadesh, and Carl F. Voegelin. Roughly one-quarter of the collection relates to Iroquoian languages and includes much WPA Oneida Project material. Research into the Cherokee language, South American languages, and kinship structures is also well represented. Floyd Lounsbury's wife, Masako Yokoyama Lounsbury, is represented by a smaller amount of material relating to linguistic research in Shanghai and research on Quechua.