I know Vicente Segrelles wrote and illustrated a young peoples' book about the history of armor, as I used to check it out of the library all the time before it "disappeared", but I can't find it on Amazon or ABEbooks, which is too bad as I meant to pick it up sometime myself. Oh well, a Google image search yields results like below, which show what he knows about armor, although his own web-site is unhelpful in this regard.
Are you anywhere in UK where you can get to a museum to see real armor?
"Three's so little room for error."--Elwell