Upon learning that the Calhoun County Historical Society and a group of Marshall citizens were interested in the Honolulu House, Mr. Brooks agreed to sell it for a sum that covered the expenses he had incurred in maintaining the property. The sale was contingent upon the Calhoun County Historical Society reorganizing locally as the Marshall Historical Society. The group agreed, and the new Marshall Historical Society became the proud owners of the Honolulu House.
Extensive restoration work on the unique wall and ceiling paintings, authentic reproduction of carpets, structural restoration of the foundation, and authentic exterior paint colors are just a few of the restoration efforts of the Society. Since its founding, the Marshall Historical Society has acquired two other structures: the Grand Army of the Republic Hall (now the Marshall Historical Museum) and Capitol Hill School. Restoration and maintenance of the three museums owned by the Marshall Historical Society continues under the guidance of the Board of Trustees.