Nancy Drew - Hollow Oak Tea Cozy - Sleuth Pam has created a fabulous knitting pattern to create your own Hollow Oak Tea Cozy! Inspired by the classic Nancy Drew book, The Message in the Hollow Oak. (Book cover art shown above for visual purposes, not part of this purchase!) Pattern is a PDF file with instructions on how to complete the project. Once purchased, we will e-mail you the file - it can take up to 24 hours to receive as a human has to send it to you, it's not automatic.