This collection of photographs, shot by Reverend James O. Arthur while serving as a missionary for the Reformed Church of America, documents the activities on the Winnebago Reservation in Nebraska in 1913 as well as Mescalero and Chiricahua Reservation in White Tail, New Mexico from 1914-1919. Additional images depict vacations and travels throughout the United States by the Arthur family and friends between the years 1913-1928.

Reverend James Owen Dorsey (1848-1895) was a missionary and Bureau of American Ethnology ethnologist who conducted extensive research on Siouan tribes and languages.The papers of James Owen Dorsey comprise mostly ethnographic and linguistic materials on various tribes of the Siouan language family as well as tribes from Siletz Reservation in Oregon. These materials include texts and letters with interlineal translations; grammar notes; dictionaries; drawings; and his manuscripts. In addition, the collection contains Dorsey's correspondence, newspaper clippings, his obituaries, and reprints.

The Frank C. and Clara G. Churchill collection includes photographic negatives, photo albums, lantern slides, journals, scrapbooks and other documents created and compiled by the Churchills over the course of Frank's career as a special agent and Indian Inspector for the Department of the Interior between 1899 and 1909. Initially assigned as a revenue collector to the Cherokee Nation and later as an Indian Inspector reviewing boarding schools, Frank's assignments took him all over the United States including Indian Territory (present day Oklahoma), Missouri, Texas, Nebraska, Kansas, South Dakota, Minnesota, Wisconsin, New Mexico, Arizona, Utah, California, Florida, North Carolina and Alaska. During this time the Churchills visited over 80 different Native communities shooting photographs and taking notes.

The Helen Peterson collection includes correspondence, notes, miscellaneous administrative documents, financial records, calendars, questionnaires, notes from interviews, survey forms, copies of resolutions, proceedings, speeches, programs, press releases, printed and processed material, and many other types of documents. Mainly these relate to Petersons's career and special interests between 1953 and 1970. There are also a few documents that concern the organizations which Peterson served for periods preceding or following her periods in office. Of special interest are the materials related to the NCAI, many of which supplement the records in that organization's files. The collection also includes documents that concern a wide range of Indian interests and activities.

Photographs relating to Native Americans or frontier themes, including portraits, expedition photographs, landscapes, and other images of dwellings, transportation, totem poles, ceremonies, infants and children in cradleboards, camps and towns, hunting and fishing, wild west shows, food preparation, funeral customs, the US Army and army posts, cliff dwellings, and grave …

Scrapbook entitled "Our Wild Indians in Peace and War: Surveys, Expeditions, Mining and Scenery of the Great West," compiled by James E. Taylor, possibly as a source for his own illustrations.

The Robert Rankin papers, 1886, 1914, 1956-2011, document his field work, research, and professional activities, primarily in relation to his work studying American Indian languages. Rankin was professor of linguistics at the University of Kansas from 1969 until his retirement in 2005. The collection consists of sound recordings, field notebooks, vocabulary lists and bibliographies, dictionaries, research files, slip files, word lists, correspondence, ephemera, notes, readings and reprints, writings, drafts, and teaching materials. This includes materials from Rankin's work with the last native speakers of the Quapaw and Kaw (Kansa, Kanza) languages and subsequent research, writings, and collaborations with tribes and fellow linguists.

The National Congress of American Indian (NCAI), founded in 1944, is the oldest nation-wide American Indian advocacy organization in the United States. The NCAI records document the organization's work, particularly that of its office in Washington, DC, and the wide variety of issues faced by American Indians in the twentieth century. The collection is located in the Cultural Resource Center of the National Museum of the American Indian.

The John Canfield Ewers Papers document his wide ranging anthropological interests from early White depictions of Native Americans to the material culture of the Plains tribes through correspondence, exhibit catalogs, field notes, illustrations, lectures, maps, photocopies of archival materials, photographs, and writings. The collection includes materials relating to his numerous …

The Beatrice Medicine papers, 1913-2003 (bulk 1945-2003), document the professional life of Dr. Beatrice "Bea" Medicine (1923-2005), a member of the Standing Rock Sioux tribe, anthropologist, scholar, educator, and Native rights activist. The collection also contains material collected by or given to Medicine to further her research and activism interests. Medicine, whose Lakota name was Hinsha Waste Agli Win, or "Returns Victorious with a Red Horse Woman," focused her research on a variety of topics affecting the Native American community: 1) mental health, 2) women's issues, 3) bilingual education, 4) alcohol and drug use, 5) ethno-methodologies and research needs of Native Americans, and 6) Children and identity issues. The collection represents Medicine's work as an educator for universities and colleges in the United States and in Canada, for which she taught Native American Studies courses. Additionally, because of the large amount of research material and Medicine's correspondence with elected U.S. officials and Native American leaders, and records from Medicine's involvement in Native American organizations, the collection serves to represent issues affecting Native Americans during the second half of the 20th century, and reflects what Native American leaders and organizations did to navigate and mitigate those issues. Collection materials include correspondence; committee, conference, and teaching material; ephemera; manuscripts and poetry; maps; notes; periodicals; photographs; training material; and transcripts.