The Hawai’i subject files include materials about indigenous communities, sovereignty, and the tourism industry in Hawai’i from approximately 1989 to 2007. The materials include socioeconomic reports; Federal Register entries; court opinions; journal articles; informational booklets and packets; conference booklets; brochures; press releases; materials on sovereignty and federal recognition; information on the Native Economic Alliance (NEA) and the Council for Native Hawaiian Advancement (CNHA); and newspaper articles.

The Northeast regional subject files include materials about Native American communities and gaming in Connecticut, Delaware, Kentucky, Maine, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island, Virginia, and West Virginia, dating from approximately 1974 to 2009. The materials include socioeconomic and annual reports; Federal Register entries; court opinions; testimony transcripts and letters from the National Gambling Impact Study Commission (NGISC); journal articles; photographs from research trips; book reviews; notes; casino profiles; informational packets and booklets; promotional materials; memos; and newspaper articles. The Northeast subseries focuses primarily on the Native American casino gaming enterprises of the Mashantucket Pequot Indian Tribe and the Mohegan Tribe of Indians.

The Plains regional subject files include materials about Native American communities and gaming in Iowa, Kansas, Missouri, Montana, Nebraska, North Dakota, Oklahoma, South Dakota, and Texas dating from approximately 1988 to 2008. The materials include socioeconomic reports, tribal-state gaming compacts, regulatory materials, Great Plains Indian Gaming Association materials, journal articles, Native American newspapers, periodicals, informational packets, court opinions, Dr. Spilde’s research photographs, National Indian Gaming Association (NIGA) site visit materials, newsletters, memos, National Gambling Impact Study Commission (NGISC) correspondence, press releases, fact sheets, video recordings of televised programs, promotional materials, and newspaper articles.

The Plains subseries focuses primarily on Native American gaming and non-gaming topics in Oklahoma, North Dakota, South Dakota, and Nebraska. The materials document a number of Native American nations, particularly the Sisseton-Wahpeton Oyate of the Lake Traverse Reservation; the Standing Rock Nation of North and South Dakota; and the Mandan, Hidatsa, and Arikara (Three Affiliated Tribes of the Fort Berthold Reservation, North Dakota).

The Southeast regional subject files include materials about Native American communities and gaming in Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, and Tennessee dating from approximately 1992 to 2007. The materials include socioeconomic reports, tribal constitutions, tribal-state gaming compacts, journal articles, court opinions, legal briefs, Dr. Spilde’s research photographs, correspondence, and newspaper articles. The Southeast series focuses primarily on gaming and non-gaming topics for Mississippi and Louisiana. Materials also document Native American communities, particularly the Mississippi Band of Choctaw Indians.

The United States subject files include photographs, newspaper articles, and periodicals about national gaming topics dating from approximately 1990 to 2015. The photographs depict numerous Native American casinos and reservations visited by Dr. Spilde on research trips. The newspaper articles cover topics such as the Bureau of Indian Affairs, Department of the Interior, campaign financing, taxes, labor unions, articles about Dr. Spilde, nuclear waste, and other topics. The periodicals include nationally circulating magazines that cover the gaming industry, Native American sociocultural issues, and the hospitality and tourism industries.

The international subject files include materials about gaming and non-gaming topics in Africa, Asia, Australia, Canada, Europe, Latin America and the Caribbean, the Middle East, and the Pacific Islands dating from approximately 1991 to 2015. The materials include socioeconomic reports, national surveys, annual reports, Alberta Gaming Research Institute materials, conference materials, maps, brochures, booklets, journal articles, periodicals, promotional materials, photographs, audio recordings, video recordings, and newspaper articles. The international subject files focus primarily on gaming and non-gaming topics in Australia and Canada and provide valuable documentation for national and international comparative research.

The National Indian Gaming Association (NIGA) files document NIGA’s efforts to protect Native American rights through policy-making and the regulation of Native American gaming enterprises. The materials date from 1993 to 2014, with the bulk of materials dating from 1997 to 2001. Materials include research and publications, materials about the Enzi Amendment, and materials about gaming classifications collected by Katherine Spilde while she worked for NIGA. Also included are reports, directories, memos, correspondence, press releases, congressional records, testimonies, interviews, notes, journal articles, photographs, video recordings of NIGA hearings, promotional materials, and newspaper articles.