Records of the State effort to detribalize the Narragansett people in 19th century Rhode Island are recorded in a number of historical documents found in the Sidney S. Rider Collection at the John Hay Library, and in particular the following historical and legislative documents:
Arnold, A Statement of the Case of the Narragansett Tribe (1896)
RI General Assembly, Act Presented by the Select Committee on the Narragansett Tribe of Indians (1880)
RI General Assembly, Narragansett Tribe of Indians: Report of the Committee of Investigation (1880)
Tribe and Council of the Narragansett Indians, Memorial to the Honorable General Assembly (1867)
RI General Assembly, Report of the Committee on Indian Tribe [sic], 1852
Other pertinent documents could be found in the holdings at the Rhode Island State Archives.
For a contemporary Narragansett perspective on the impact of State actions on the tribe and its way of life, please see the links below to the Narragansett tribal website.