Go check out Pre-Code.com, a nice site filled with reviews & material on all sorts of pre-production code Hollywood material.
I landed on it while reading about an old Wheeler & Woolsey comedy, Diplomaniacs, which I just sat through.
And as always, they made me appreciate the Marx Brothers even more.
But check out all the material on Pre-Code.com. I might vary in opinion with the reviews, of course, but this guy’s stuff is thorough, detailed and extremely well designed and illustrated. It’s a great place for obscure movie tips.