Pink Floyd's The Dark Side of the Moon is to seal its place in history at the US Library of Congress as part of its National Recording Registry.

BBC: Pink Floyd album to be preserved by US Library

Amber Ludwig, who had the compact, athletic body of a seal, with very small hands and dark, closely set eyes, said she feared Tom was going to return like you hear on the news and open fire.

NPR: Excerpt: 'Then We Came to the End'