Donating Used College Textbooks?

I was interested in donating several college textbooks is subjects such as nursing, science and software engineering. These books are in good to very good condition, but the campus bookstore would not buy them back for one reason or another. (usually because they changed to a new edition) A few have some high lighting but aside from that the pages are very clean and the covers are in good condition as well. I live in Florida and I can't seem to find any location in Florida that accepts used textbook donations.

View this post on my blog: http://travelnursesuccess.com/donating-used-college-textbooks