The most general advice I would give is to look at how books describe their settings and the details that entail that. How they describe not just the look but the feel and the vibe of the location. I find that if you manage to do it, accents can be pretty effective provided they're understandable and don't give off the wrong accent. Also see if you can look up anything about diction as well; find how people of the era would talk and any euphemisms they might use. IE anything from "them" to "colored" to "negros" to whatever else someone might have used to describe a black person.