This collection is housed at the University of Florida - George A. Smathers Libraries.
Currently there are about 50 historic newspapers from the Sunshine State on line. Some of the newspapers date back to the mid 1800s and some are more recent. The searching is quite easy and the viewer provided is quite nice. While there is currently no apparent way to cut and past a portion of the image, like you can do with Adobe Reader, you can save the entire page with a right click of your mouse (on a PC) and do the cropping with your own image editing software such as Paint Shop Pro, Photo Shop or Gimp. Images are in the jpeg format.
This one is also free to access and free to use. I did note that at times the system slows down, probably from student usage at the university.
Here's the link: