Shell letter Click on the images to view larger versions and read their captions. This is the bag that arrived at my address in Prague. It says on it that it has been used to protect and deliver an item inadvertently damaged in transit.Inside the bag I found this broken shell letter, addressed to me.This is the letter-poem written on the inner surface of the shell.Tune your ear. This is part of a shell letter that was sent to me when I lived briefly in Prague. You may click on it to examine it in more detail and learn more of its story. Go back to Excessive Correspondence.