I'd think if anyone has such a map, it would be Dr. Jean Hubble at Ohio. She's one of the premier epidemiologists studying PD. Camilla, do you know if it's possible to contact Dr. Hubble about this info, if the NPF doesn't have a map of the incidence of PD? << You can call the NPF at 1-800-327-4545 and ask to be put on the list. The newsmagazine is excellent. You might also reqwuest a set of their free booklets on various PD topics. >> Margie Swindler