The casino series (1979-1983) contains documents pertaining to events run by the Frontier casino including a blackjack tournament, the Jack Straus Poker Championship, the Miss Casino Bikini Contest, and various golf tournaments.

The National Gambling Impact Study Commission (NGISC) files document NGISC’s efforts to survey gambling in the United States dating from approximately 1980 to 2002, with the bulk of materials dating from 1997 to 1999. Spilde worked on a subcommittee of the commission that researched the impacts of Native American gaming and non-Native American gaming on Native American and non-Native American communities. The materials include NGISC testimonies; agendas; memos from NGISC, the National Indian Gaming Association (NIGA), and the National Indian Gaming Commission (NIGC); correspondence from corporations and private communities regarding their support of Native American gaming; socioeconomic reports; journal articles; and newspaper articles. The socioeconomic reports investigate a number of topics such as state lotteries, Native American gaming, and advertising.