Orton Plantation Boundary Increase and Additional Documentation is an expansion of Orton Plantation (NR 1973), which encompassed twelve acres of Orton Plantation, including the Orton mansion and its ornamental gardens. Since Orton Plantation‟s listing, important historic resources have been identified in the surrounding landscape that have inspired the owner to apply to the National Register in order to broaden the boundaries of the district to 953.8 acres and to expand the period and areas of significance. Orton Plantation Boundary Increase and Additional Documentation describes the historic core of the larger Orton property, which historically comprised almost 10,000 acres. For the purposes of this nomination, the property included within the boundary discussed here will be called Orton Plantation, and the larger, surrounding property, the Orton property. When referred to historically, it will be called, simply, Orton.