Read Harley Rivers Dickinson and the Dickinson Statement. He references Nazis using fluoride evidenced by Charles Perkins. Ian Stephens wrote something on evidence back then. Its unfortunate people like to "debunk" old history because they are too stupid to look and dig themselves. Start here: https://fluorideinformationaustralia.files.wordpress.com/2013/12/fluorides_fluoridation-ian-e-stephens-the-dickinson-statement.pdf
Stephens article archived:
https://archive.org/details/fluoride.and.mind.control