This link to an audio interview was posted previously:
<a href="http://www.aip.org/history/ohilist/4325.html" rel="nofollow">http://www.aip.org/history/ohilist/4325.html</a>
Gamow talks about meeting Bohr and his wit: He says that he was startled to see a horseshoe nailed above the door to Bohr's house. Gamow asked Bohr why he had it there. Bohr said "I've heard that it works even if you don't believe in it."