Cast members from "The Andy Griffith Show," included Don Knotts (from left) as Deputy Barney Fife, Ron Howard as Opie Taylor and Andy Griffith as Sheriff Andy Taylor. Tourism in Mount Airy is up since Andy Griffith died July 3. | AP

Betty Lynn, who played Thelma Lou on "The Andy Griffith Show," pauses at a statue of Andy and Opie Taylor in Mount Airy, N.C. | AP FILE PHOTO

Visitors check out the many exhibits at the Andy Grifith Museum in Mount Airy, N.C. The town served as the inspiration for Mayberry, the fictional setting for the iconic 1960s television series "The Andy Griffith Show." | AP ~ Surry Arts Council, Hobart J

FILE - This July 3, 2012 file photo shows Mike and Terry Jones sitting outside Wally's Service, a replica of the Andy Griffith Show, in Mount Airy, N.C. Tourism in Mount Airy is up since Andy Griffith died July 3, with about 10,400 people visiting the Andy Griffith Museum in July, almost double the 5,400 who visited in July 2011. (AP Photo/Gerry Broome, file)

This July 3, 2012 file photo shows tourists outside Wally's Service, a replica from "The Andy Griffith Show," in Mount Airy, N.C. | AP ~ GERRY BROOME

ADVANCE FOR USE SUNDAY, JAN. 1, 2011 AND THEREAFTER - In this Thursday, Dec. 1, 2011 photo, a customer leaves Snappy Lunch in Mount Airy, N.C. This small town in the foothills of the Blue Ridge mountains is the hometown of Andy Griffith and the Mayberry portrayed in his television show - America as it used to be, or as we would like to believe it used to be. (AP Photo/Chuck Burton)