This chart has previously been unavailable as a download. I recently misplaced my original hard copy from 2011, and I thought it was time for a spit shine, anyway. Chart is completely re-done with new cover and instructions, new commentary, new photographs, and a crystal clear, full-color chart. This is for the DOWNLOAD -- after purchase, you will receive an automated e-mail with instructions to download. You have 30 days from purchase to complete the download, after which time, the link will expire.