Do you honestly imagine, Gerald, that a helluva lot hasn't changed in the interim? Zone system technique is what he was really pushing, and those books are still generally useful, but probably not
a single film, paper, or filter he mentioned still exists. His darkroom setup was downright archaic even
for that era. AA has his place secure in the history of photography, and because he was an adept
teacher, we've inherited his knowlege, but then, added a tremendous number of tricks since. I've sold
millions of dollars worth of specialized coatings and varnishes, and am testing more at the moment.
So I think I know a thing or two.