I was going to say that's not a bad idea, if a little too progressive for 1937. It is replete with the opposite, for the same purpose.
Both direct...
Capetown, South Africa
"Caution. Avoid "District Six," especially REDACTED prostitutes, who are nearly all diseased.
And subtle...
Barcelona, Spain...
"Caution. Regulation for prostitutes are not strict."
It would actually be fun to use this as a travel guide just to see if some of the "Amusements" and "Points of Interest" (e.g., "Petrified icthyosaurus at Herradura," in Coquimbo, Chile) are still there! On the other hand, in terms of "Cautions", I can already attest that some things never change (e.g., "Bad place to be stranded," Amapala, Honduras).
There are some very interesting statements in here in many parts of the world that would be extremely bad form to post outside of the context of an academic, historical exercise, and these days, even that context can get one in trouble.
Others are just humorous and written in a style that has probably grown more entertaining with age.
Here is one example under the Funchal, Madeira section (yes, this still politically autonomous region of Portugal wasn't even listed under Portugal)...
"Caution. Avoid bad liquors. Madeira wine, young or old, is extremely heady, and should be drunk, if at all, in moderation. Beware of touts who offer to show you the sights."