The artifacts uncovered at the site have been well-preserved and include both organic remains and intact homes, providing significant archaeological evidence regarding the Mississippian way of life.

[2] The Larson Site was a stockaded village with a large flat-topped mound in an open plaza surrounded by homes.

[5] Spoon River Mississippian consists of three phases:[6] In 1964 through 1970, archaeologist Alan Harn excavated the Larson Site.

[9] The site was added to the National Register of Historic Places on November 21, 1978.

This article about a property in Fulton County, Illinois on the National Register of Historic Places is a stub.