I see three more cast iron cookbooks which are free today.
Cast Iron for Two
https://www.amazon.com/Cast-Iron-Two.../dp/B07CKKDCFR
*****
Savory Cast Iron Skillet Cookbook
https://www.amazon.com/Savory-Cast-I.../dp/B072Z255WS
*****
Cast Iron Cookbook: From Stove to Table
https://www.amazon.com/Cast-Iron-Coo.../dp/B076P1KVJY