Johnny O'Brien, 1961 graduate of Milton Hershey School, and past President of the Milton Hershey School, 2003 to 2008, will be a speaker at the Hershey History Center. Johnny O'Brien is the author of "Semisweet: An Orphan's Journey Through the School the Hersheys Built". Program registration is not required. His book is available for purchase in the 1729 Shop.