Hi,
You may find aerials of Lee County here: http://ufdc.ufl.edu/aerials/all/table/2
If you scroll down, you'll see Lee County at (38). Click on the + to view aerials for different years.
Please let us know if you have any additional questions or feel free to contact the Map & Imagery Library: http://www.uflib.ufl.edu/maps/
Sincerely,
The Reference Staff
George A. Smathers Libraries
University of Florida