The Blue Earth County Historical Society is a community non-profit organization that boasts two public facilities in Mankato: the Blue Earth County History Center & Museum and Historic R.D. Hubbard House. The Blue Earth County History Center & Museum is located at 424 Warren Street and features an interactive history museum dedicated to the rich heritage of Blue Earth County, a fully staffed Research Center for historians and genealogists, and a great book and gift shop featuring unique local items such as Marian Anderson fine art prints. The History Center & Museum is open year-round Tuesday-Saturday; admission charged. The Historic R.D. Hubbard House, located at 606 S. Broad Street, is a historic house museum chronicling the life and times of Mankato flour mill entrepreneur R.D. Hubbard in the late 1800s. The Hubbard’s home was the first private residence in Mankato to have indoor plumbing, electricity and a telephone; and stands as one of the finest examples of Victorian architecture and design in Minnesota. Walk-in guided tours are available seasonally May – September; admission charged.