On the web:
Wikipedia page: Press On Regardless®
POR Newsletters for 2008 running
Facebook page
Scott Harvey Jr’s Beginner’s Guide to TSD Rally
2020 article at Hagerty.com.
2025 interview – Andrew Layton: Historian & Author
Books:
Andrew Layton’s excellent history of POR, ‘Press On Regardless: The Story Of America’s Longest, Oldest And Meanest Road Rally’. Available from Amazon and Revolution Press, LLC.