Mary Mulholland remained in the house until her death in 1935 at which time the property was left to her ward, Edelmira Rivero. The cost of maintenance and taxes forced Miss Rivero to sell the house and remove the furnishings. Ownership of the house changed hands several times and the three-story house was divided into eleven apartments. In 1965, the City of Palatka purchased the property and gave the Putnam County Historical Society use of the house.
Due to the efforts of the Society, the city commissioners did not raze the house as planned. The Society made some repairs and secured listing on the National Register of Historic Sites for it as the Bronson-Mulholland House. Historical and archeological studies were made by Florida State University personnel. The City of Palatka awarded the contract for restoration of the house from a Community Development Grant in 1975. Restoration was completed and the house opened with a dedicatory ceremony in November, 1977. Much of Miss Rivero's furniture was returned to the house from her estate by her will.
Cooperating in the City of Palatka's Community Development project of restoration were the Florida Department of State, U.S. Department of the Interior, U.S. Department of Housing and Urban Development, and the Putnam County Historical Society.