Many of us know there's not necessarily such a thing as "correct" written English, and the same can be said for pronunciation. This book explores the many accents of English speakers, where they came from, and how we feel about them.
Raciolinguistics: How Language Shapes Our Ideas About Race
You Talkin' to Me? The Unruly History of New York English
Talking Back, Talking Black: Truths About America's Lingua Franca