In addition to my regular batch of scholarly papers, sundry blog posts, and podcast trancripts, two of my book-length readings are Viking-themed, part of an independent research project for a seminar on “Vikings and Warlords” at Rollins College:
- Arthur L. Herman, The Viking Heart: How Scandinavians Conquered the World, Mariner Books (2021)
- Werner Herzog, The Future of Truth, Penguin Press (2025)
- George Lakey, Viking Economics, Melville House (2017)
- Daniel Nina, Verano del 2019 [nunca ocurrió], Pasillo del Sur (2022)
- Marcus Willaschek, Kant: A Revolution in Thinking, Belknap Press (2025)
prior probability 
The economics of Vikings book reminds me of The Invisible Hook by Peter Leeson.
https://en.wikipedia.org/wiki/The_Invisible_Hook
It’s an excellent read!
I love Leeson’s book — indeed, I had the distinct honor of meeting Leeson some years ago and am a huge fan!