In the interest of supplementing my post, Do regional accents persist in America?, I offer these links:
- The dialect map of American English (shown above), including a short but useful bibliography.
- A comprehensive dialect survey conducted by Bert Vaux, a professor of linguistics and foreign languages at the University of Wisconsin-Milwaukee.
- No survey of resources on American dialects would be complete without some reference to the battle royale between pop, soda, and coke. Americans drink staggering numbers of carbonated beverages, but we can't agree on what to call them.