Old College Textbooks

I have about 25-50 college textbooks. A big chunk are international editions that cant be sold, but has the exact same material. I don't want to bring these to the recycle plant, these are still pretty good textbooks that are 3-4 editions old. Amazon and college bookstores wont take them. Is there a place I can donate them to for 3rd world country/ poorer neighborhoods? I live in MI.