Carroll sent me this intriguing piece. She had written her letter on the back, writing about how fortunate for the mail art that it was cold, so wouldn't stick. And the blackened edges were reminiscent of the fiery scene of the stamp.
I carefully opened it, to reveal this impressive beast. It doesn't fit on the scanner, so you'll have to make do with this photo. It is much more vibrant in person. And a very clever way to send art.