Did sea gulls save Mormon settlers’ crops? Did Brigham Young mysteriously and miraculously leave a space in design plans for the Salt Lake Temple that later would be filled by elevators? Did Elvis Presley make margin notes in a Book of Mormon? Was Yoda of “Star Wars” fame really modeled after former church President Spencer W. Kimball?

Those are just some of the stories that float around Latter-day Saint circles. But are they true?

Keith Erekson, director of the Church History Library, answers those questions and more in his new book, “Real vs. Rumor: How to Dispel Latter-Day Myths.” Even more important, he arms readers with the tools needed to discern for themselves the difference between fact and fiction whether in religion, politics, medicine or other fields.

On this week’s show, Erekson talks about myth-busting and faith-building. He also answers the most common question he receives: Does the Church History Library have the sword of Laban of Book of Mormon fame?