AUSTIN—About 1,000 people sat rapt as former President Jimmy Carter sat for a public interview about his years as president and his views on current events at the Lyndon B. Johnson Library in Austin.

American presidents hold the most powerful office on earth and occupy a unique place at the center of national and world events. At once chief executive, head of state, commander-in-chief, and leader ...

Bill Clinton and Jimmy Carter head the list of speakers, and organizers hope President Barack Obama also will be on hand next month when the Lyndon B. Johnson Presidential Library celebrates the 50th ...