Scott Rank of Regnery Publishing interviewed Geoff on September 11, 2017.
The interview is featured in an episode of a podcast called History Unplugged. This radio show answers listener FAQs and conducts in-depth interviews with authors and historians. They explore historical lies and misconceptions and shed light on forgotten tales from the past.
You can read more information and listen to the interview here. The podcast is also available for free download.