Ken Wheeler – Hidden Secrets of Magnetism
https://archive.org/details/magnetism1small
Coral Castle Code by John Depew
http://www.coralcastlecode.com/
Magnetic Research of Clay Taylor
https://www.artofclaytaylor.com/science-diagrams
https://archive.org/details/magnetism1small
http://www.coralcastlecode.com/
https://www.artofclaytaylor.com/science-diagrams