In 1954 Roger Bobo read a story about Ralph Vaughan Williams' Tuba Concerto in Time magazine, and wrote to the Library of Congress to ask where he could find a copy of the music. The title of this post comes from the letter they sent in reply to his request. Bobo tells the story about meeting the composer here.
While you are on the site, make sure to click on the little music player on the upper left (it started automatically for me), and listen to Roger Bobo play the Air from Bach's Third Suite. It's simply beautiful.