If you are a Peterson fan, you'll enjoy reading this recent blog entry by Mark Irwin. Mark continues to whet our appetite for his upcoming Peterson book. This entry is an analysis on dating a Premier system pipe.
https://petersonpipenotes.wordpress.com/2017/09/01/71-reading-the-story-of-a-premier-system/
https://petersonpipenotes.wordpress.com/2017/09/01/71-reading-the-story-of-a-premier-system/