Who is Lyndon Johnson from Travels in Hyper Reality: Essays and what is their importance?

Lyndon Johnson was a former president of the United States. While he was still alive, he constructed his "Fortress of Solitude" in Austin, Texas. Within this "museum" are collected documents related to his political career, voice recordings of his career done by his wife, and other memorabilia. He even has statues made of wax of his two daughters Luci and Lynda. The structure is now referred to as the Lyndon B. Johnson Library, and contains within it a replica of the Oval office. Eco comments that this library is a form of attempting immortality through reproduction.