For those of you interested in vintage cast iron and other cookware, here's the book mentioned by WL. It's still available.
The Book of Wagner and Griswold: Martin, Lodge, Vollrath, Excelsior (A Schiffer Book for Collectors)...
"The only time you should fear cast iron is if your wife is fixin' to hit you with it."-Kent Rollins
First law of science: don't spit into the wind.
Magnus