The public is invited to join in celebration of the completion of the new vault at the Mansion Museum. Special guest will be Gov. Terry E. Branstad who is the longest serving Governor in American History. Branstad, who spent his younger years in Winnebago County, will speak and then will be honored for his years as governor and recently as Ambassador to China. The Mansion Museum is home to the Branstad Memoribilia Collection and will be open that afternoon.