There is an F-111 at the Turner Military Surpluss store, just off of I-30, some 20 miles WEST of Texarkana.
231 Shiloh Road
Leary, TX 75561
PH: 903.832.6985
The guy had a large collection of WW-II memorabilia, including a good number of aircraft identification models.
I visited this place several years ago, and I recall the F-111 being for sale, as well as a number of drop tanks from F-111s, C-130s.
There was also an M-113 simulator for sale.
If you have the time, you should visit the Jacksonville, Arkansas museum. Interesting displays, and the museum administrator is nice, and to top it all, beautiful...
Saludos,
Tulio