- Effigy mound history in Madison, Wisconsin.
- The Thorstrand estate of Magnus Swenson on the shore of Lake Mendota in Madison Wisconsin
- Walter Scott's Hickory Hill history project.
- Effigy panther mound in Madison, Wisconsin.
- The Thorstrand estate of Magnus Swenson on the shore of Lake Mendota in Madison Wisconsin
- The Magnus Swenson Estate.
- Mr. Magnus Swenson.
- The Four Lakes City, Madison Wisconsin.
- 1721 Hickory Street in Madison Wisconsin.
- Charles E. Brown Indian Mounds in the Madison arboretum
- The Thorstrand property history project in Madison, Wisconsin.
- The Hickory Hill House.
- 1924 map of Madison Wisconsin
- Hickory Hill property history page 2.
- Hickory Hill property history page 3.