Letters of note is a site that gathers fascinating and entertaining letters, postcards and other mail items. They're special for a number of reasons, but one way or another have gone unnoticed until now.

For example, remember the movie Who framed Roger Rabbit? It was groundbreaking at the time because of the way the animated characters acted seamlessly with the living characters of the movie.

The following memo was send by RIchard Williams, the movie's director of animation to all the people working on the animation department:

Isn't it precious, now that we know that they've achieved this effect so well? This, and many other wonderful examples, on lettersofnote.com.