- Fonds2012.13 - J. Kent Sedgwick fonds
- Series2012.13.2 - Research Subject Files
- Subseries2012.13.2.21 - Cottonwood Island and Island Cache
- File2012.13.2.21.01 - Projects associated with river parks and proposed Carrier village at Hudson Bay Slough
- File2012.13.2.21.02 - Cottonwood Island reports on removal of Island Cache residents after 1972 flood and suggestions for creation of park
- File2012.13.2.21.03 - Cottonwood Island background papers
- File2012.13.2.21.04 - Cottonwood Island briefs by Kent Sedgwick
- File2012.13.2.21.05 - Newspaper clippings regarding Cottonwood Island and Island Cache
- 3 more...